Nancy's Spinach Casserole

Nancy gave this recipe to my mom, who in turn made it often. It is my very favorite dish on the planet.

SPINACH CASSEROLE

3 pkgs. chopped frozen spinach
6 raw eggs, beaten
2 cartons creamed cottage cheese
1 1/2 lb. grated sharp cheddar cheese
1 stick margarine
6 T. flour

Cook and salt spinach in big boiler. Drain and return to boiler. Mix in margarine, then eggs. Sprinkle flour; add remaining ingredients. Can freeze before cooking. Bake 1 hour at 350 degrees or until crusty.