1 pound softened butter (not margarine)
2 cups sugar
3 cups all-purpose flour
2 teaspoons cream of tartar
2 teaspoons baking soda
1/2 teaspoon salt
5 cups corn flakes, lightly crushed
Heat oven to 350 degrees. In a large bowl or a stand mixer, cream butter and sugar until light and fluffy. Add all remaining ingredients except corn flakes. Mix well. Add cornflakes and mix thoroughly.
Using a standard-size cookie scoop, portion out onto ungreased cookie sheets. Bake for 10 to 12 minutes, or until lightly browned. Cool 2 minutes before removing from cookie sheet. Store tightly covered.