Rainbow Funfetti Birthday Cake Oreo Cupcakes

Ingredients

Rainbow Funfetti Cupcakes
• 2 egg whites, room temperature
• 1/2 cup milk, room temperature
• 1 tsp vanilla
  
  
• 1 1/2 cups cake flour
• 3/4 cup sugar
• 2 tsp baking powder
• 1/4 tsp salt
• 1/4 cup rainbow jimmies
  
  
• 6 Tbsp unsalted butter, soft/room temperature
  
  
• 12 birthday Oreo cookies
Rainbow Cream Cheese Buttercream
• 2oz cream cheese, room temperature
• 1/2 cup unsalted butter, room temperature
• 1 lb powdered sugar
• 1 tsp vanilla
• 2-4 Tbsp heavy cream
• pinch of salt
• Wilton food color, gel - various colors
• rainbow jimmies

Instructions

Rainbow Funfetti Cupcakes
1. Preheat oven to 350 F degrees. Line cupcake pan with liners.
2. Separate egg whites and whisk together with milk and vanilla. Set aside.
3. In the bowl of an electric mixer, sift together the flour, sugar, baking powder and salt.
4. Add the softened butter and half the milk mixture and mix on medium until combined.
5. Pour in the remaining milk mixture and mix on high until combined, about 10-15 seconds. DO NOT OVER MIX! Scrape the sides of the bowl.
6. Gently fold in the funfetti jimmies, 4-5 strokes.
7. Place one Oreo at the bottom of each cupcake liner. Fill the liner 2/3 full with batter.
8. Bake 20-22 minutes or until a toothpick comes out clean.
9. Allow to cool in pan for 4-5 minutes before removing to a wire rack to cool completely before frosting.
Rainbow Cream Cheese Buttercream
10. In the bowl of an electric mixer, cream together the butter and cream cheese.
11. Add the powdered sugar, 1 cup at a time and mix on high until smooth.
12. Add the vanilla and salt and mix until combined.
13. Mix in 2 Tbsp of vanilla. Add more, if necessary, to get your desired consistency.
14. Beat on high for 4-5 minutes until light and fluffy.
15. Separate buttercream into 4 small bowls. Add color and mix until combined.
To make rainbow frosting:
16. Prepare a large piping bag and a star tip.
17. Spoon in a dollop of each color into the bag, pressing it against the side of the bag to make room for the other colors. Continue layering in the colors into the bag.
18. Slowly press the frosting out of the star tip. Be careful not to press too hard, you don't want the colors to mix too much and come out brown.
To Assemble:
19. Pipe a swirl of rainbow frosting on top of each cooled cupcake.
20. Garnish with rainbow jimmies and half a birthday Oreo.