Broccoli Casserole - cooking recipe

Ingredients

1 small onion
1 or 2 pieces celery
1 (4 oz.) can mushrooms
1 can cream of mushroom soup
1 bag frozen cauliflower, thawed and drained
1 bag frozen broccoli, thawed and drained
2 c. cooked rice
8 oz. Velveeta cheese

Preparation

Cook together in a skillet the onion, celery and mushrooms, then add cream of mushroom soup.
Set aside.
Put in layers:
layer of onion mixture, layer of rice, layer of broccoli and cauliflower, then cheese on top.
Bake at 350\u00b0 for 30 minutes.