1/4 c. butter
10 eggs
1/2 c. flour
2 c. cottage cheese
1/2 lb. shredded cheddar cheese
1/2 lb. shredded Mozzarella or Swiss cheese
1 tsp. baking powder
1/2 tsp. salt
1 c. cooked spinach
1/4 c. minced onion

Preheat oven to 400 degrees. Place butter in pan to melt, about 5 minutes. Beat eggs in bowl, mix in flour, baking powder and salt. Add spinach, onion and all cheeses. Pour in heated, buttered 9"x13" pan. Bake 15 minutes at 400 degrees. Reduce heat to 350 degrees and bake additional 35 to 40 minutes. Let stand 5 minutes before cutting.