Blueberry Buckle

INGREDIENTS
1/4 cup butter, softened
3/4 cup sugar
1 egg
2 cups all-purpose flour
2 teaspoons baking powder
1/4 teaspoon salt
1/2 cup milk
2 cups fresh blueberries
TOPPING:
2/3 cup sugar
1/2 cup all-purpose flour
1/2 teaspoon ground cinnamon
1/3 cup cold butter

DIRECTIONS
1. In a small mixing bowl, cream butter and sugar. Beat in the egg. Combine the flour, baking powder and salt; add to creamed mixture alternately with milk. Fold in the blueberries. Pour into greased 9-in. square baking pan.
2. For topping, combine the sugar, flour and cinnamon in a bowl; cut in butter until crumbly. Sprinkle over blueberry mixture. Bake at 375 degrees F for 40-45 minutes or until a toothpick inserted near the center comes out clean. Cool on a wire rack.