Onion Casserole - cooking recipe

Ingredients

4 c. sliced sweet onions
1/2 c. margarine or butter
1 1/4 c. cornbread crumbs
1 can cream of mushroom soup
1/2 c. sour cream

Preparation

Saute onions in margarine until transparent.
Mix with remaining ingredients and pour into casserole dish.
Top with buttered cornbread crumbs.
Bake at 350\u00b0 for 30 to 40 minutes.