4 tbsp. butter
4 eggs
1 c. milk
1 c. flour
1 tsp. salt
1 tsp. baking powder
1 lb. cheddar cheese, grated
1 (10 oz.) pkg. frozen chopped spinach, thawed and drained
1 sm. onion, chopped
1/2 c. chopped mushrooms

Melt butter in a 9x13 inch pan. Mix remaining ingredients together and spoon into pan. Bake at 350 degrees for 35 minutes. Cool slightly before cutting.