Easy Broccoli Rice Casserole - cooking recipe

Ingredients

1/3 c. plus 1 Tbsp. butter/margarine
1/2 c. onion, chopped
1 (20 oz.) bag frozen chopped broccoli
2 c. cooked rice
1 can cream of mushroom soup (undiluted)
1 c. grated Cheddar cheese

Preparation

You will need a large casserole dish, lightly greased, and aluminum foil.