Quick Coffee Cake

3 TBSP softened butter or margarine
1/2 cup sugar
1 egg
1 cup flour
1 1/4 tsp baking powder
1/4 tsp salt
1/3 cup milk
1/4 tsp vanilla
1/3 cup brown sugar, packed
1/2 tsp cinnamon
2 TBSP butter or margarine

Mix 3 tbsp margarine with sugar. Add egg and beat until creamy. Mix flour, baking powder, and salt. Add to sugar mixture alternately with milk. Add vanilla. Spread batter evenly in a greased 8 inch square baking pan.

Mix brown sugar and cinnamon and sprinkle over batter. Dot with 2 tbsp margarine. Bake at 350* F for 20030 minutes.