INGREDIENTS
•
Vegetable oil, cooking spray
•
1 1/2 cups cake flour (not self-rising), sifted
•
1 tablespoon baking powder
•
1/2 teaspoon salt
•
1/2 cup plus 2 tablespoons granulated sugar
•
1/2 cup skim milk
•
1/3 cup canola oil
•
1 1/2 teaspoons pure vanilla extract
•
Finely grated zest of 1 lemon, plus 1 teaspoon fresh lemon juice
•
4 large egg whites, room temperature
•
1 tablespoon confectioners' sugar
•
4 large egg yolks, lightly beaten
•
Finely grated zest of 1/2 lemon, plus 1/2 cup fresh lemon juice
•
1 1/3 cups granulated sugar
•
1/3 cup cornstarch
•
Pinch of salt
•
1 teaspoon pure vanilla extract
•
1 1/3 cups blueberries, lightly crushed