Spinach Casserole

2 10 ounce packages frozen chopped spinach, thawed and drained
2 cups cream style cottage cheese
1/2 cup butter, cut into pieces
1 1/2 cups American cheese, cubed
3 eggs beaten
1/4 cup flour
1 teaspoon salt

Thoroughly combine all ingredients in mixing bowl. Pour into greased crockpot.

Cover and cook on high 1 hour, then turn to low for 4 to 5 hours.

Recipe may be doubled if desired.