Lemon Squares

Preheat oven to 350°F degrees.
Butter 13x9x2-inch baking pan.
In food processor combine 2 cups flour, butter pieces, 1/2 cup powdered sugar and the coconut.
Process until moist clumps form.
Press onto the bottom of the prepared pan.
Bake about 20 minutes, until edges are golden.
In a large bowl, whisk together 2 cups sugar, eggs, lemon juice, baking powder and the remaining 1/4 cup flour until well blended.
Pour over hot crust.
Bake until topping is set and light brown, about 25 minutes.
Cool in the pan on a wire rack.
Cut into squares and dust tops with powdered sugar.
Can be made 1 day ahead.
Cover with plastic wrap.
Makes 36 squares.