1/2 cup sugar
1 1/4 cups all-purpose flour
1 cup sugar
2 tablespoons all-purpose flour
1/2 teaspoon baking powder
1/8 teaspoon salt
2 tablespoons lemon juice
1 tablespoon freshly grated lemon zest
Heat oven to 350°F. Grease 8- or 9-inch square baking pan; set aside.
Combine all crust ingredients in bowl. Beat at medium speed, scraping bowl often, until well mixed. Press into prepared pan. Bake 15-17 minutes or until edges are lightly browned.
Combine all filling ingredients in same bowl. Beat at medium speed until well mixed. Pour filling over hot, partially baked crust. Continue baking 17-20 minutes or until top is light golden brown. Sprinkle with powdered sugar. Cool completely. Cut into bars.
For easy cutting, line pan with aluminum foil, leaving 1-inch overhang on ends. Lightly grease foil. Bake as directed above. Remove bars from pan, using foil ends. Peel foil from sides of bars. Cut into bars.