Birthday Cake Sugar Cookies
These soft and chewy sugar cookies are packed with rainbow sprinkles and cake batter flavor, then topped with a swirl of buttercream and extra sprinkles. They're the perfect celebration cookie—whether it’s your birthday or not.
Servings: 18 cookies
Ingredients
For the cookies:
- ¾ cup salted butter room temperature
- 1 ½ cup granulated sugar
- 2 tsp vanilla extract
- 1 tsp cake batter extract
- 1 egg room temperature
- 1 tbsp corn starch
- ½ tsp baking soda
- ½ tsp baking powder
- ½ tsp kosher salt
- 2 cups all-purpose flour
- ½ cup rainbow sprinkles
For the frosting:
- ½ cup salted butter room temperature
- 2 cups powdered sugar
- ½ tsp vanilla extract
- ½ tsp cake batter extract
- ½ tsp salt
- 2-4 tbsp heavy cream room temperature
- extra sprinkles for garnish
Instructions
For the cookies:
- In a stand mixer or large bowl, beat butter and sugar for 2 minutes until light and fluffy. Add in vanilla, cake batter extract, and egg. Mix until just combined. Add in the cornstarch, baking soda, baking powder, salt, and flour. Mix just until a dough forms and stir in the sprinkles.
- Preheat oven to 350°F. Line baking sheets with parchment. Scoop dough into 2½ tablespoon-sized balls and place 2 inches apart. Bake for 10–11 minutes, until edges are just set. They’ll look soft in the center—that’s perfect! Let cool on the sheet for 5 minutes, then transfer to a rack. Allow to cool completely.
For the frosting:
- Beat the butter, powdered sugar, cream, vanilla, and salt until fluffy. Add more cream if you'd like it to be a thinner consistency. Spread evenly on each cookie and top with more sprinkles. Serve & enjoy!