Overnight Coffee Cake


1/3 cup butter, softened
1/2 cup sugar
1/4 cup packed brown sugar
1 egg, beaten
1 cup flour
1/2 teaspoon baking powder
1/4 teaspoon baking soda
1/2 teaspoon ground cinnamon
1/2 cup buttermilk

In mixing bowl, cream butter and sugar. Add eggs; mix well. Combine the flour, baking pwder, baking soda and cinnamon; add to creamed mixture alternately with buttermilk. Beat well. Spread into greased 8-inch square baking pan. Combine the TOPPING INGREDIENTS: 1/4 cup packed brown sugar, 1/4 cup finely chopped pecans, 1/4 teaspoon ground cinnamon. Sprinkle over the batter. Cover and refrigerate overnight. Bake, uncovered at 350 degrees for 40-45 minutes or until the cake tests done.