Spinach and Potato Casserole

7-8 large potatoes, peeled, cooked and mashed

1-8-ounce carton sour cream

1 cup shredded Cheddar cheese

2 tablespoons chopped chives

1-10-ounce package frozen spinach thawed and drained

2 teaspoons salt

1/4 teaspoon pepper

1/4 cup butter or margarine

In a large bowl, combine all ingredients except cheese.

Spoon into a greased 2-quart casserole dish, sprinkle cheese on top.

Bake uncovered, at 400° F. for 15-20 minutes.