Cookie Monster Cookie Dough

3 sticks butter or margarine (soft, but not melted)
2 cups sugar
4 eggs
2 tsp. vanilla
5 cups all-purpose flour
2 tsp. baking powder
2 tsp. salt

Cream butter and sugar in a medium mixing bowl. Mix in eggs and vanilla. Add flour, baking powder, and salt. Chill at least 1 hour. Roll dough about ¼ inch thick; cut out cookies. Put cookies on ungreased cookie sheet. Bake at 400° for 6 to 8.