Mashed Potato Casserole - cooking recipe

Ingredients

4 cups Mashed potatoes
1/2 cup sour cream
1 cup grated cheddar cheese
1/4 cup parmesan cheese
1/2 cup cooked and diced bacon
1/2 cup thinly sliced green onions
1/4 cup ranch dressing

Preparation

Preheat oven to 350 degrees.
Mix above ingredients together thoroughly.
Place in baking dish covered loosely with foil.
Bake for 30 minutes.