Cookies • 1 cup unsalted butter softened (226g) • ¾ cup granulated sugar (150g) • 1 large egg + 1 large egg white • ½ teaspoon vanilla extract • 3 ¼ cups cake flour (375g) • 1 Tablespoon cornstarch • 1 teaspoon baking powder • ¾ teaspoon table salt

Frosting • ¾ cup unsalted butter softened (170g) • 2 ¼ cups powdered sugar (280g) • 1 Tablespoon light corn syrup • 1 teaspoon vanilla extract • ⅛ teaspoon table salt • Food coloring optional, I used Americolor "soft pink" and "electric pink" for the cookies in today's post • Sprinkles optional

Combine butter and sugar in the bowl of a stand mixer (or in a large bowl using an electric mixer) and beat until light and creamy.

Stir in egg, egg white, and vanilla extract until thoroughly combined.

In a separate bowl, whisk together cake flour, cornstarch, baking powder, and salt.

With mixer on low-speed, gradually add dry ingredients to wet until completely combined.

Form dough into a 1” thick disk and cover tightly with plastic wrap. Refrigerate for 1 hour.

Remove dough from refrigerator. Transfer to a clean, lightly floured surface and use a rolling pin to roll dough to be between ¼-½” (about 1 cm) thick. 

Use a 2” (5cm) round cookie cutter to cut out cookies as close together as possible and place on prepared baking sheet, spacing cookies at least 2” (5cm) apart.

Bake in 350F (175C) oven for 8-10 minutes. Allow cookies to cool on baking sheet for at least 5-10 minutes before carefully removing to cooling rack to cool completely. 

Prepare your frosting! In a large bowl (or stand mixer) using an electric mixer, beat butter until smooth and creamy.

Add about half the powdered sugar, corn syrup, vanilla extract, and salt and stir until smooth and thoroughly combined, then slowly stir in remaining powdered sugar.

If using food coloring, stir it in at the end adding a small bit at a time until desired color is reached.

Spread or pipe frosting evenly over cookies (I use a ½” open tip) and decorate with sprinkles, if desired.

Add sprinkles and Enjoy!