Lemon Squares I Recipe

Ingredients

• 1 cup unsalted butter
• 2 cups sifted all-purpose flour
• 0.5 cup sifted confectioners' sugar
• 2 cups white sugar
• 4 eggs
• 1 lemon
• 6 tablespoons lemon juice
• 0.5 teaspoon baking powder
• 1.5 cups chopped walnuts
• 1 tablespoon all-purpose flour