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

Melt butter and place in 9 x 13 inch pan. Mix together remaining ingredients. Bake at 350 degrees for 30 to 45 minutes. Cool slightly before cutting.

Great to take on picnics.