Spinach Casserole - cooking recipe

Ingredients

2 pkg. frozen spinach
1 c. chopped onions (frozen in pkg.)
1 c. Parmesan cheese
1 tsp. Worcestershire
1 Tbsp. garlic salt
1 stick margarine
1 can cream of mushroom soup

Preparation

Brown onions with margarine.
Mix all ingredients together in bowl.
Cook 30 minutes in 350\u00b0 oven.