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These Grinch Cupcakes are the cutest way to bring a little mischief to your Christmas dessert table. You get a super moist red velvet cupcake, piled high with neon green buttercream and finished with a little red heart on top — just like our favorite grumpy guy whose heart grew three sizes that day. 💚
I also love that this recipe starts with a box of red velvet cake mix for convenience, then gets doctored up with buttermilk, extra eggs, and vanilla for better flavor and texture. You get all the ease of a mix (hello, holiday sanity saver!) with a softer, richer crumb that tastes like you fussed way more than you actually did.
Pull up a kitchen stool, friend — let’s make your holiday dessert table just a little more whimsical (and a whole lot more delicious).
✨ Before You Begin
✨ Use room temperature ingredients. Let your buttermilk and eggs sit out for 20–30 minutes so they’re not ice cold. This helps the batter mix smoothly and bake up with a more even, tender crumb.
✨ Don’t overfill the cupcake liners. Aim for about two-thirds full. Overfilling can cause the cupcakes to mushroom over the top or sink in the center as they cool.
✨ Cool the cupcakes completely. I know it’s tempting to frost early, but piping on warm cupcakes will melt the buttercream and make it slide right off. Cool on a wire rack until there’s no warmth left in the centers.
✨ Gel food coloring is your friend. Neon green gel gives you that bold Grinch shade without thinning the frosting. Liquid food coloring can water down your buttercream and soften your swirls.
✨ Salt your frosting (just a tiny bit). A small pinch of fine salt in the buttercream really helps balance the sweetness and makes the green vanilla flavor taste more “bakery-style.”
Grinch Cupcakes Ingredients + Key Notes
This is just a quick glance at what you’ll need. For exact measurements and the full ingredient list, head down to the recipe card below.
For the Cupcakes
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Red velvet cake mix – A 15.25-ounce box is your base. Using a mix keeps things simple and consistent, especially during busy holidays.
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Buttermilk – Swapped in for water to add subtle tang, extra richness, and a softer crumb. The acidity also helps the cake rise nicely.
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Vegetable oil – Gives you that moist, tender texture that stays soft even after a day or two. Oil keeps cupcakes from drying out as quickly as butter-only batters.
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Eggs – Three large eggs help the cake rise and give the structure it needs to hold a tall swirl of frosting.
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Vanilla extract – Boosts the flavor of the cake mix so it tastes more homemade and less “from a box.”
For the Buttercream Frosting
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Unsalted butter – The base of your frosting. Softened (not melted!) butter whips up light, fluffy, and creamy. Using unsalted gives you control over the salt level.
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Powdered sugar – Sweetens and thickens the frosting. The fine texture dissolves into the butter for a smooth, pipeable consistency.
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Heavy cream – Loosens and lightens the buttercream so it’s creamy instead of stiff. It also helps the frosting whip up a little fluffier than milk.
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Vanilla extract – Simple and classic; it gives the frosting that familiar vanilla bakery flavor that pairs perfectly with red velvet.
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Neon green gel food coloring – Creates the bright, cartoony Grinch color without watering down your frosting.
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Red heart sprinkles – The sweetest little finishing touch, turning each cupcake into a mini Grinch with a tiny heart that “grew three sizes.”
⭐ Pro Tips for the Best Grinch Cupcakes
⭐ Start with truly softened butter. Your butter should give slightly when pressed but not look greasy or melty. Too cold and your frosting will be lumpy; too warm and it can turn soupy and lose its shape when you pipe it.
⭐ Sift the powdered sugar for silky frosting. It’s one little step that makes a big difference in texture, especially with a bright color where any little lump will show. Just sift it into a bowl before adding it to the butter.
⭐ Taste your frosting before you color it. Once you add neon green, it’s harder to “read” the flavor visually. Adjust the vanilla and salt while it’s still white so the sweetness is balanced and the vanilla flavor is just right.
⭐ Go slowly with the gel color. Gel coloring is concentrated. Start with a small dab, mix well, then add more as needed. It’s much easier to deepen the color than to fix frosting that’s gone too dark or unnaturally neon.
⭐ Chill briefly for cleaner swirls. If your kitchen is warm, pop the filled piping bag in the fridge for about 10 minutes before you start decorating. Slightly cooler frosting holds its shape beautifully when you pipe tall swirls.
🔬 The Baking Science Behind These Grinch Cupcakes
Doctoring a cake mix might feel like a shortcut, but there’s real baking science at work here.
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Buttermilk vs. water: Most cake mixes call for water, which adds moisture but no flavor. Buttermilk brings gentle tang, extra fat, and acidity. That acidity reacts with the leaveners already in the mix, helping the cupcakes rise a bit higher while also tenderizing the crumb.
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Oil for moisture. Oil stays liquid at room temperature, so cupcakes made with oil stay soft for longer than those made with butter alone. It’s one reason these cupcakes are still moist on day two.
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Extra eggs for structure and richness. Using three eggs gives you a richer batter and a stronger crumb structure. That matters when you’re adding a big swirl of buttercream on top — the cupcakes need enough strength not to collapse.
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Whipped buttercream texture. Beating the butter first, then adding sugar slowly, traps air in the frosting. Those tiny air bubbles give you a fluffier, lighter mouthfeel instead of a dense, heavy frosting, which balances nicely with the moist red velvet base.
How to Make Grinch Cupcakes
Here’s a quick look at how to assemble this easy Grinch Cupcakes recipe (full instructions in the recipe card below).
Mix the batter. Preheat your oven to 350°F and line two 12-cup muffin pans with paper liners. In a large bowl, combine the red velvet cake mix, buttermilk, vegetable oil, eggs, and vanilla. Beat on medium speed for about 2 minutes, scraping the sides of the bowl once or twice, just until the batter is smooth and slightly fluffy.
Bake the cupcakes. Divide the batter evenly among the cupcake liners, filling each about two-thirds full. Bake for 15–20 minutes, starting to check at 15. The cupcakes are done when a toothpick inserted in the center comes out clean or with just a few moist crumbs. Let them cool in the pan for a few minutes, then transfer to a wire rack and cool completely.
Make the green buttercream. Beat the softened butter on medium speed for 2–3 minutes, until very creamy and a bit lighter in color. Gradually add the powdered sugar, about 1 cup at a time, alternating with the heavy cream, mixing on low between additions. Once everything is in, beat on medium until smooth, thick, and fluffy, then mix in the vanilla and a tiny pinch of fine salt if you like. Add neon green gel food coloring a little at a time until you reach a bright Grinch green. If the frosting seems too thick, beat in more cream, 1 teaspoon at a time. If it’s too soft, add a bit more powdered sugar.
Decorate like a Grinch. Spoon the frosting into a piping bag fitted with a large star tip and pipe generous swirls onto each completely cooled cupcake. Gently press a single red heart sprinkle onto each swirl so it stands out against the green. Serve and enjoy, or store for later (see tips below).
Recipe Notes
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This recipe usually makes about 24 cupcakes, depending on how full you make your liners.
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If you love extra tall frosting, consider making 1.5x the buttercream so you can pipe big swirls without worrying about running out.
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A metal muffin pan conducts heat more evenly than a silicone one, which helps the cupcakes bake up with a nice, even rise.
⭐ Pro Tips for the Best Grinch Cupcakes
⭐ Start with truly softened butter. Your butter should give slightly when pressed but not look greasy or melty. Too cold and your frosting will be lumpy; too warm and it can turn soupy and lose its shape when you pipe it.
⭐ Sift the powdered sugar for silky frosting. It’s one little step that makes a big difference in texture, especially with a bright color where any little lump will show. Just sift it into a bowl before adding it to the butter.
⭐ Taste your frosting before you color it. Once you add neon green, it’s harder to “read” the flavor visually. Adjust the vanilla and salt while it’s still white so the sweetness is balanced and the vanilla flavor is just right.
⭐ Go slowly with the gel color. Gel coloring is concentrated. Start with a small dab, mix well, then add more as needed. It’s much easier to deepen the color than to fix frosting that’s gone too dark or unnaturally neon.
⭐ Chill briefly for cleaner swirls. If your kitchen is warm, pop the filled piping bag in the fridge for about 10 minutes before you start decorating. Slightly cooler frosting holds its shape beautifully when you pipe tall swirls.
Storing + Freezing + Make-Ahead Tips
Storing
- Store frosted Grinch cupcakes in an airtight container at cool room temperature for up to 1 day, or in the refrigerator for 2–3 days. If you refrigerate them, let the cupcakes sit out for 20–30 minutes before serving so the cake and frosting soften back up.
Freezing
- You can freeze the unfrosted cupcakes for up to 2 months. Let them cool completely, then wrap them individually in plastic wrap and place in a freezer bag or airtight container. Thaw at room temperature before frosting. Buttercream can also be made ahead and frozen separately; just thaw in the fridge and re-whip before using.
Make-Ahead
- For stress-free holiday entertaining, bake the cupcakes 1 day ahead and keep them covered at room temperature. You can make the frosting a day in advance as well — store it in the fridge, then let it soften and re-whip before coloring and piping. If you want to fully decorate ahead, frost and decorate the cupcakes, refrigerate them, and bring them toward room temperature before serving.
Food Safety
- If you’d like more info on food safety, check out this link.
✦ Grinch Cupcakes FAQs
✦ Why did my cupcakes sink in the middle?
Cupcakes usually sink when they’re either underbaked or the batter was overmixed. Make sure you’re only beating the batter for about 2 minutes — just until smooth — and always start checking doneness around the 15-minute mark. The centers should spring back lightly when touched, and a toothpick should come out clean or with just a few moist crumbs. Also avoid opening the oven door repeatedly while they bake.
✦ My frosting is too thick to pipe. How can I fix it?
If your buttercream is stiff or difficult to pipe, add more heavy cream, just 1 teaspoon at a time, beating well after each addition until it’s smooth and creamy. A tiny bit of extra cream goes a long way. Make sure the butter is fully softened as well — if it’s still a little firm, the frosting will feel thick and heavy.
✦ My frosting is too soft and won’t hold a swirl. What do I do?
If the frosting is too soft, mix in a little more powdered sugar, a few tablespoons at a time, until it holds its shape. You can also pop the bowl of frosting in the fridge for 10–15 minutes, then beat it again briefly. Warm kitchens (and very soft butter) can make buttercream a bit floppy, so a little chill time usually helps.
✦ Can I use regular food coloring instead of gel?
Liquid food coloring will work in a pinch, but you’ll need to use more of it to get that bold Grinch green, which can thin out your frosting. Gel food coloring is much more concentrated, so you get vibrant color with just a small amount and the frosting stays thick and pipeable.
✦ Can I make these cupcakes the day before serving?
Yes! These are great make-ahead treats. You can bake the cupcakes and store them covered at room temperature, then frost and decorate the next day, or fully decorate them and refrigerate. Just bring them toward room temperature before serving so the cake is soft and the frosting tastes creamy, not firm.
Still have questions? Drop them in the comments — I love helping you cook with confidence! 💗
More Delicious Christmas Treats
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Italian Christmas Cookies – Tender, cake-like vanilla cookies coated in a sweet glaze and topped with colorful sprinkles. They’re classic, festive, and perfect for filling out your holiday cookie trays.
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Easy Fudge – Rich, ultra-creamy chocolate fudge that comes together with just a handful of ingredients. It’s simple enough for busy holiday weeks but tastes like you spent all afternoon stirring at the stove.
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Christmas Sugar Cookies – Soft, buttery cut-out cookies that hold their shape and are perfect for decorating with festive icing and sprinkles. Kids and adults both love them.
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Chocolate Crinkle Cookies – Fudgy, brownie-like cookies with crackly powdered sugar tops that look like they’ve been dusted with fresh snow. They’re as pretty on a platter as they are delicious.
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Pecan Pie Bars – All the gooey, toasty pecan pie flavor baked into easy bar form. They slice beautifully and are ideal for potlucks, parties, and gifting.
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Carmelitas – Buttery oat bars layered with gooey caramel and melted chocolate. They feel extra indulgent and are always one of the first treats to disappear from the dessert table.
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Homemade Crockpot Hot Chocolate – A warm, ultra-creamy hot chocolate you can keep in the slow cooker for hours. Perfect for sipping alongside your cookies and bars during tree-trimming or movie night.
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Thanks for stopping by my kitchen today — happy cooking, friends! 💗 Kathleen
Grinch Cupcakes
Ingredients
For the Cupcakes:
- 1 (15.25-ounce) box red velvet cake mix
- 1 cup buttermilk
- 1/2 cup vegetable oil
- 3 large eggs
- 1 teaspoon pure vanilla extract
For the Buttercream Frosting:
- 1 cup (2 sticks) unsalted butter softened
- 4 cups powdered sugar
- 3 tablespoons heavy cream
- 1 teaspoon pure vanilla extract
- Neon green gel food coloring
- 24 red heart sprinkles
Instructions
- Prep the oven and pans. Preheat your oven to 350°F (177ºC) and line two 12-cup muffin pans with paper liners. For the most even bake, position your oven rack in the center.
- Mix the cupcake batter. In a large mixing bowl, combine the red velvet cake mix (1 box), buttermilk (1 cup), vegetable oil (1/2 cup), eggs (3), and vanilla (1 teaspoon). Beat on medium speed for about 2 minutes, stopping once or twice to scrape down the sides and bottom of the bowl, until the batter is smooth and slightly fluffy. Try not to overmix—once it looks well combined, you’re done.
- Fill and bake the cupcakes. Divide the batter evenly among the liners, filling each about two-thirds full. Bake for 15–20 minutes, starting to check at 15 minutes. The cupcakes are done when a toothpick or cake tester inserted in the center comes out clean or with just a few moist crumbs. If your oven bakes unevenly, rotate the pans front-to-back halfway through. Let the cupcakes cool in the pans for a few minutes, then transfer them to a wire rack to cool completely before frosting.
- Make the green buttercream. In a stand mixer or large bowl with a hand mixer, beat the softened butter (1 cup) on medium speed for 2–3 minutes, until it’s very creamy and a bit lighter in color. Slowly add the powdered sugar (4 cups), about 1 cup at a time, alternating with the heavy cream (3 tablespoons), mixing on low until incorporated after each addition.Once everything is in, increase the speed to medium and beat until the frosting is smooth, thick, and fluffy. Mix in the vanilla (1 teaspoon) and just enough neon green gel food coloring to reach a bright Grinch-y green. If the frosting seems too thick, add a little more cream, 1 teaspoon at a time; if it’s too soft for piping, beat in a bit more powdered sugar until it holds a nice swirl. If you’d like to take the sweetness down a notch, you can also beat in a tiny pinch of salt to balance the flavor.
- Decorate the cupcakes. Spoon the frosting into a piping bag fitted with a large star tip. Pipe generous swirls of frosting onto each completely cooled cupcake. Gently press one red heart sprinkle onto the side or top of each swirl so it really pops against the green. Serve right away, or store the cupcakes covered at cool room temperature for up to a day, or in the fridge for a bit longer—just let them come back toward room temp before serving for the softest texture.
Notes
- Start with truly softened butter. Your butter should give slightly when pressed but not look greasy or melty. Too cold and your frosting will be lumpy; too warm and it can turn soupy and lose its shape when you pipe it.
- Sift the powdered sugar for silky frosting. It’s one little step that makes a big difference in texture, especially with a bright color where any little lump will show. Just sift it into a bowl before adding it to the butter.
- Taste your frosting before you color it. Once you add neon green, it’s harder to “read” the flavor visually. Adjust the vanilla and salt while it’s still white so the sweetness is balanced and the vanilla flavor is just right.
- Go slowly with the gel color. Gel coloring is concentrated. Start with a small dab, mix well, then add more as needed. It’s much easier to deepen the color than to fix frosting that’s gone too dark or unnaturally neon.
- Chill briefly for cleaner swirls. If your kitchen is warm, pop the filled piping bag in the fridge for about 10 minutes before you start decorating. Slightly cooler frosting holds its shape beautifully when you pipe tall swirls.
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