Christmas Cake Mix Whoopie Pies
These festive red and green whoopie pies are made with a white cake mix and filled with fluffy vanilla frosting. They're soft, sweet and perfect for holiday parties or Christmas cookie trays.
Equipment
- 1 piping bag optional
- 1 Star piping tip optional (I like the Wilton 1M or 4B tips)
Ingredients
Whoopie Pie Rounds
- 1 box white cake mix 15.25 ounces
- 2 Tbsp flour
- 1/3 cup vegetable oil
- 2 eggs
- 1/4 cup milk
- 1 tsp vanilla
- red and green food coloring the "deep" red and green colors, if you can find them, work best
Vanilla Filling
- 1 cup unsalted butter softened
- 4 cups powdered sugar
- 1 tsp vanilla
- 1-2 Tbsp milk or cream to adjust for consistency
Instructions
Make Red and Green Whoopie Pie Rounds
- Set it to 350°F (175°C) and line baking sheets with parchment paper.
- Whisk together the cake mix and flour in a large bowl. Add oil, eggs, milk, and vanilla, then stir until smooth.
- Divide the batter evenly into two bowls. Tint one bowl red and the other green with gel food coloring. Mix well so the colors are bright and even. *See note about food coloring
- Drop 1-tablespoon scoops of batter onto baking sheets, leaving space between each. I like to use a cookie scoop to get even sizing.
- Bake for 9–11 minutes, or until the tops spring back when touched. Cool completely.
Make Filling
- Beat butter until creamy, then add powdered sugar and vanilla. Mix in milk a little at a time until the frosting is light and fluffy.
- You can put the filling in a piping bag with a star tip (or no tip!) for pretty presentation if you want to. Spreading with a butter knife also works.
Assemble
- Pair up cookies of similar size. Pipe or spread filling onto one side and top with its match. I like to pipe my frosting with a Wilton 1M tip for pretty swirls.
Store
- You can store these at room temperature for up to 2 days, but I prefer to store them in the fridge. They taste freshest if you wrap them individually in plastic wrap and let them come to room temperature before eating. *See note about storage
Notes
*Food coloring: I like to use the deep red and deep green food coloring that I can normally find at Michael's. Especially for the green, any light colored green food coloring comes out more of a pastel green than a Christmas-tree kind of green. I would definitely go with the colors that look like they're going to be way too dark in the bottle, and then they're probably just right for this with only a few drops of food coloring needed.
*Storing whoopie pies: If you don’t want to wrap each whoopie pie in plastic wrap, you can also store them in an air tight container lined with parchment paper. If stacking in a container, I like to dust the layers with a bit of powdered sugar and put parchment paper between each layer so they don’t stick to one another.