Mix first 7 ingredients together in a large mixing bowl. Refrigerate the mixture for 10 minutes.
Pour bread crumbs (1 cup) onto a plate.
Shape mixture into 1/4 cup by 3 inch round, mashed potato patties. You should have about 8 patties. Dredge the patties in bread crumbs, gently pressing down so the bread crumbs will stick.
Heat oil in a 12-inch nonstick skillet. Tilt the pan as needed to evenly coat the bottom of the pan.
Cook 4 patties at a time in the pan, over medium-high heat, on both sides, about 3-4 minutes per side, until golden brown and crispy. Add more oil, as needed, to cook the second batch. Serve warm with sour cream and a sprinkle of green onions.
Notes
Firm Patties: When making the potato mixture, it should be somewhat firm. You should be able to form firm patties. If not, add a little flour a tablespoon at a time until the texture is firm enough to hold together. If not, the patty will fall apart when frying.
Pan: These fry up best in a nonstick skillet! They stick badly to a regular skillet.