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Broccoli Cauliflower Casserole

Our cheesy broccoli cauliflower casserole is a deliciously decadent side dish with its lusciously thick, from-scratch cream sauce with a cheesy crunchy top!
Course Side Dish
Cuisine American
Keyword broccoli casserole recipes, casserole side dishes, cauliflower casserole recipes, vegetable side dishes
Prep Time 15 minutes
Cook Time 20 minutes
Total Time 35 minutes
Servings 8 people
Calories 647kcal

Ingredients

  • 2 (16-ounce) packages frozen broccoli, thawed and drained on paper towels
  • 1 (16-ounce) package frozen Cauliflower thawed and drained on paper towels
  • 6 tablespoons butter
  • 1/2 cup onion diced
  • 2 cloves garlic minced
  • 3 tablespoons all-purpose flour
  • 2 teaspoons salt
  • 1/2 teaspoon black pepper
  • 1 1/2 teaspoons paprika
  • 3/4 teaspoon dried mustard
  • 1 teaspoon Worcestershire sauce
  • 3 cups heavy cream

Topping:

  • 1 1/2 cups dried coarse bread crumbs
  • 2 cups sharp cheddar cheese, shredded

Instructions

  • Preheat oven to 350ºF (177ºC) and lightly grease a 2-quart baking dish.
  • Melt butter (6 tablespoons) in a large skillet (large enough to later accommodate all the broccoli and cauliflower). Add onions (1/2 cup) and garlic (2 cloves) and cook until soft and tender. 
    Step 1 how to make broccoli cauliflower casserole, saute the garlic and onions
  • Add in flour (3 tablespoons), salt (2 teaspoons), pepper (1/2 teaspoon), paprika (1 1/2 teaspoons), dried mustard (3/4 teaspoon), and Worcestershire sauce (1 teaspoon). Whisk together until a smooth paste forms. Cook mixture over medium heat for 1 minute.
    Step 3 how to make cauliflower broccoli casserole, Whisk until smooth paste forms.
  • Remove skillet from heat and whisk in cream (3 cups) whisking until mixture is smooth. 
    Step 4 how to make broccoli and cauliflower casserole, Remove the skillet from heat and add the cream.
  • Replace skillet to medium heat and bring mixture to a boil stirring constantly. Add broccoli (32 ounces) and cauliflower (16 ounces) and mix to evenly coat.
    Step 7 how to make broccoli cauliflower casserole with frozen vegetables, Mix until evenly coated.
  • Pour the vegetable and cream mixture into the prepared casserole dish. Sprinkle the top of the casserole evenly with cheese (2 cups) and then bread crumbs (1 1/2 cups). 
    Step 9 how to make broccoli cauliflower casserole, Sprinkle top with cheese and breadcrumbs.
  • Bake in the preheated oven for 20 minutes or until the casserole is heated through to the center and the edges are bubbly.

Notes

  1. Low-carb option: A cauliflower and broccoli casserole is a great low-carb addition to the dinner table. Just leave off the breadcrumbs! Broccoli’s high-fiber and antioxidants give you added health benefits on top of being low-carb!
  2. Reduced Fat Option: If you are looking for a healthy broccoli cauliflower casserole, this recipe is very easy to lighten up! Swap chicken broth for the heavy cream and use low-fat cheese to decrease the calories while preserving a similar homemade cream sauce flavor.
    • Another way to make this broccoli casserole healthy would be to decrease some of the cheese on top and use half and half instead of cream.
  3. Ritz Cracker Variation: Making broccoli cauliflower casserole with Ritz crackers is a common variation on this recipe.
    • We’ve gone with breadcrumbs, but if crackers are in the pantry, they work just as well! Just blitz them in the food processor or simply crush them in a resealable bag, air removed, with a rolling pin!).

Nutrition

Serving: 1/8 of the recipe | Calories: 647kcal | Carbohydrates: 32g | Protein: 16g | Fat: 53g | Saturated Fat: 32g | Cholesterol: 175mg | Sodium: 1077mg | Potassium: 691mg | Fiber: 5g | Sugar: 5g | Vitamin A: 2763IU | Vitamin C: 130mg | Calcium: 371mg | Iron: 3mg