Charlotte's Coffee Cake

Butter for greasing pan

Cinnamon Filling:

1/3 cup brown sugar

4 Tbsp. softened butter

 2 Tbsp. flour

1 Tbsp. cinnamon

Coffee Cake:

3 cups flour

2 tsp. baking powder

1/2 tsp. baking soda

1/2 tsp. salt

1 1/2 cups sugar

1/2 cup butter, softened

3 eggs

2 tsp. vanilla

16 oz sour cream

powdered sugar

Heat the oven to 350*. Grease a Bundt pan, making sure you get into all the grooves. Combine the ingredients for the cinnamon filling in a bowl and blend them with your fingers. In another bowl, combine flour, powder, soda, and salt. Set both mixtures aside. In a large bowl, use a wooden spoon to mix the sugar into the butter until soft and smooth. Beat in the eggs one at a time. Then beat in the vanilla and sour cream. Add the flour mixture a little at a time, beating well after each addition. Spoon half of the batter in pan and sprinkle the cinnamon filling on top. Pour in the remaining batter. Drag a knife back and forth to swirl. Bake the coffee cake for 50-60 minutes. Let the cake cool in the pan for 10 minutes. Then invert on wire rack and cool. Dust with powdered sugar.