Gooey Butter Strawberry Shortcake | Crust Ingredients: 1 cup cake flour 3 tablespoons granulated sugar 1/3 cup butter, softened  Filling Ingredients: 1 1/4 cups granulated sugar 3/4 cup (1 1/2 sticks) butter, softened 1 egg 1 cup all-purpose flour 2/3 cup evaporated milk 1/4 cup light corn syrup 1 teaspoon vanilla icing sugar  Toppings Ingredients: 1 pound strawberries, quartered 2 cups heavy whipping cream