Italian Beef Casserole
["1 1/2 lb. extra lean ground beef", "1 (8 oz.) can mushroom pieces", "2 pkg. frozen chopped broccoli", "1 (8 oz.) light sour cream", "1 can cream of celery soup", "1 can cream of mushroom soup", "1 tsp. garlic powder", "3/4 tsp. black pepper", "5 Tbsp. minced dry onion", "1 (6 oz.) pkg. grated Mozzarella cheese", "1 (6 oz.) grated Cheddar or Colby cheese or 1 large pkg. mixed grated Cheddar and Mozzarella cheese"]
["Brown", "meat", "and", "mushroom", "pieces.", "Drain", "excess oil. Cook broccoli as directed on package; drain.", "Add all ingredients except", "cheese and mix well.", "Put thin layer in casserole dish, 9 x", "13-inch.", "Sprinkle with half of both cheeses.", "Add remaining mixture", "and", "sprinkle again with remaining cheese. Bake at", "350\u00b0 for", "30", "minutes, if using immediately.", "If for future use,", "cover tightly", "with", "foil wrap before baking and freeze."]
["extra lean ground beef", "mushroom pieces", "broccoli", "light sour cream", "cream of celery soup", "cream of mushroom soup", "garlic powder", "black pepper", "onion", "Mozzarella cheese", "mixed grated Cheddar"]