Bars Lemon Recipe Lemon Squares Ingredients - 1 cup flour 1/2 cup butter softened 1/4 cup powdered sugar 1 cup sugar 2 teaspoons grated lemon peal 2 tablespoons lemon juice 1/2 teaspoon baking powder 1/4 teaspoon salt 2 eggs Steps - 1. Heat oven to 350F 2. Mix flour, butter and powdered sugar. Press into ungreased square pan (8"*8"*2") Build up the edges a bit to hold in the filling. 3. Bake 20 minutes. 4. Beat remaining ingredients until light and fluffy. 5. Pour over hot curst. 6. Bake 20-25 minutes or until a light touch on the centre does not go in. 7. Sprinkle top with powdered sugar if desired and cut into squares.