Rainbow Buttercream Whoopie Pies

Name: Rainbow Buttercream Whoopie Pies
Prep time: 50 min
Total time: 50 min
Cuisine: American, Southern
Ingredients: 192 grams all purpose flour (1 1/2 cups); 1/2 teaspoon baking powder; 1/2 teaspoon baking soda; 1/4 teaspoon fine sea salt; 60 grams unsalted butter, softened (4 tablespoons); 105 grams granulated sugar (1/2 cup); 1 egg; 1 teaspoon vanilla extract; 75 milliliters whole milk (1/3 cup); 3 tablespoons rainbow sprinkles, plus more to decorate the cakes; 400 grams confectioner’s sugar (3 cups), plus more to adjust consistency; 4 tablespoons whole milk, plus more to adjust consistency; 1/2 teaspoon cake batter favoring; 1/8 teaspoon kosher salt; Gel food coloring (red, orange, yellow, green, blue, purple)

Instructions

Prep:50min

These rainbow buttercream whoopie pies feature swirls of cake batter-flavored rainbow filling sandwiched between soft vanilla cakes, plus a healthy dose of rainbow sprinkles on top!

Updated at: Thu, 30 Oct 2025 04:24:55 GMT