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crumbl oreo cookie with birthday cake frosting
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5 from 17 votes

Birthday Cake Oreo Copycat Cookie

A decadently deep chocolate cookie topped with rich cake batter buttercream, might just be the perfect combination! cookies so good you will want to make everyday your birthday!
Prep Time15 minutes
Cook Time15 minutes
Cooling Time15 minutes
Course: Dessert
Cuisine: amercian
Keyword: crumbl cookies, oreo cookie
Servings: 24 servings (makes 12 cookies)
Author: Karli Bitner

Ingredients

Oreo Cookie Base

Birthday Cake Frosting

  • 3/4 cup salted butter softened
  • 1 1/2 tsp cake batter flavoring
  • 4 1/2 cups powdered sugar
  • milk to thin
  • rainbow sprinkles

Instructions

  • Preheat oven to 350°.
  • Cream together the butter, granulated sugar and brown sugar.
  • Add the egg and vanilla. Mix until light in color and creamy.
  • Add in the dry ingredients (flour, black cocoa, crushed oreos, baking soda, baking powder and salt), mix into the dough. Mix until completely combined.
  • Portion out the dough into 1/2 cup portions. Roll into a ball and arrange 6 onto each cookie sheet. Press down slightly on the cookie dough, flattening it into what looks like a hockey puck.
  • Bake for 12-15 minutes, until the cookies are no longer glossy on the top.
  • Allow the cookies to cool on the pan for 20 minutes before frosting.
  • While the cookies are cooling, make the frosting by whipping the butter and cake batter flavoring until smooth.
  • Add the powdered sugar, one cup at a time. Add a splash of milk as needed to combine the powdered sugar with the butter.
  • Repeat until all of the powdered sugar has been added and you've reached your desired consistency. (If the frosting is too thick, add another tsp or so of milk)
  • Place the buttercream in a piping bag fit with a large round piping tip. You can alternately place the buttercream in a gallon sized tiptop bag and snip the corner an pipe from the baggie, if needed.
  • Pipe the frosting onto each cookie in a spiral starting in the center of the cookie, workin your way out.
  • Add rainbow sprinkles to the top, for garnish.
  • Serve warm.
    Store in and air tight container either in the fridge or on the counter.

Nutrition

Calories: 448kcal | Carbohydrates: 64g | Protein: 4g | Fat: 20g | Saturated Fat: 12g | Trans Fat: 1g | Cholesterol: 60mg | Sodium: 423mg | Potassium: 112mg | Fiber: 1g | Sugar: 46g | Vitamin A: 561IU | Calcium: 40mg | Iron: 2mg