Rice Casserole - cooking recipe

Ingredients

1 1/2 sticks butter
2 medium onions, cut in strips
2 cans onion soup
2 c. uncooked rice
2 small cans mushrooms

Preparation

Melt butter and saute onions in saucepan.
Mix everything together and put in casserole plate.
Bake covered for 1 hour at 350\u00b0.