Frosted Sugar Cookie Bars

Description

These frosted sugar cookie bars are soft, chewy, and topped with creamy vanilla buttercream. And sprinkles… of course!

Ingredients

• 1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
• 3/4 cup (150g) granulated sugar
• 1 large egg + 1 egg yolk*
• 2 teaspoons pure vanilla extract
• 1 and 1/2 cups (188g) all-purpose flour (spooned & leveled)
• 1/4 teaspoon salt
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1 and 1/2 teaspoons cornstarch
• 1/2 cup (80g) rainbow sprinkles (not nonpareils)*

Vanilla Frosting

• 3/4 cup (12 Tbsp; 170g) unsalted butter, softened to room temperature
• 2 and 1/4 cups (270g) confectioners’ sugar
• 3 Tablespoons (45ml) heavy cream or half-and-half*
   
• 1 teaspoon pure vanilla extract
• salt, to taste
• optional: food coloring (I used 1 drop red for this pink frosting) and extra sprinkles for decorating on top

Instructions

1. Make the bars: Preheat oven to 350°F (177°C). Line an 8-inch square pan or 9-inch square pan with aluminum foil, making sure to leave enough overhang on the sides. Set aside.