Ingredients
2 cups all-purpose flour1/2 cup sugar2 teaspoons baking powder1 large egg, lightly beaten1/2 cup milk1/4 cup butter, softened1 teaspoon grated lemon zest2 cups fresh or frozen blueberriesTOPPING:1/3 cup sugar1/4 cup all-purpose flour1/4 cup finely chopped walnuts1/2 teaspoon ground cinnamon3 tablespoons cold butter
Preparation
In a bowl, combine flour, sugar and baking powder. Add egg, milk, butter and lemon zest; mix just until dry ingredients are moistened. Fold in the blueberries. Spread in a greased 9-in. square baking pan. For topping, combine sugar, flour, walnuts and cinnamon. Cut in butter until mixture is crumbly. Sprinkle over batter. Bake at 350° for 40-45 minutes or until cake tests done.