2 (10 oz.) pkg. chopped spinach, cooked and drained
1 lb. ricotta cheese
2 egg yolks
Salt and pepper to taste

Grease casserole. Mix all above ingredients. Put in casserole. Sprinkle with grated Parmesan cheese. Dot top with 1 teaspoon butter. Bake 20-25 minutes at 350 degrees.