Whipped Shortbread Cookies Ingredients (5 Simple Ingredients) 1 cup (2 sticks) unsalted butter, softened 1/2 cup powdered sugar 1/2 cup cornstarch 1 1/2 cups all-purpose flour 1 teaspoon vanilla extract Festive sprinkles (for decorating) Instructions Prep the Oven: Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper. Whip the Butter: In a large bowl, use a stand mixer or a hand mixer to beat the softened butter until it is very light and fluffy. This is the whipping s