Preheat oven to 350 degrees F. Combine 1 1/2 cups flour and 1/4 cup of the granulated sugar in a medium bowl. Cut in butter until mixture resembles coarse crumbs. Press onto bottom of 8x8x2 inch or 9x9x2 inch baking pan. Bake
for 15 to 20 minutes or until edges are brown
. Meanwhile, combine eggs, remainnig sugar, lemon juice, 2 tbsp. flour and baking powder in a medium bowl. Pour over hot crust. Bake for 18 to 20 minutes or until set. Cool completely on a wire rack. Sprinkle with confectioner's sugar. Top with melted raspberry preserves, if desired.