Preheat the oven to 350°F (180°C). Line a cookie sheet with parchment paper or a silicone baking mat and set aside.
Cream together the butter, margarine and granulated sugar until smooth.
1/2 cup (111g) salted butter, softened, 1/2 cup (111g) margarine, softened, 1 1/4 cup (288g) granulated sugar + more for rolling
Scrape down the sides of the bowl and add the egg, corn syrup and cake batter flavoring. Mix until well combined.
1 egg, 2 Tbsp light corn syrup, 1 tsp cake batter flavoring
Next, add the all-purpose flour, baking soda, and salt. Mix until a soft dough forms.
2 1/2 cups (380g) all-purpose flour, 1/2 tsp baking soda, 1/2 tsp salt
Finally, add in the sprinkles and white chocolate chips and mix until evenly distributed.
1/2 cup (107g) sprinkles, 1/2 cup (100g) white chocolate chips
Portion out the cookie dough into equal sized portions. For small cookies, use a #40 scoop or 1 ½ Tbsp of dough. For larger cookies, use a #24 scoop or 3 Tbsp of dough.
Bake at 350°F until the cookies spread and no longer look wet and glossy in the center. For the small cookies, about 7-9 minutes. For the larger cookies, 9-11 minutes. Allow the cookies to cool on the pan for 10 minutes before transferring to a cooling rack.
Store in an airtight container for up to 3 days. Enjoy!