Oven Mashed Potatoes - cooking recipe

Ingredients

8 to 12 Idaho potatoes
2 Tbsp. onion flakes
dash of pepper
1 pt. sour cream
1 c. Cheddar cheese, grated
1/2 c. Parmesan cheese

Preparation

Cook potatoes until tender. Mash with milk.
Mix remaining ingredients, reserving 1/4 of cheese for garnish.
Grease 2-quart casserole.
Refrigerate overnight. Bake at 350\u00b0 for 45 minutes (last 20 minutes, uncover until golden brown).