Whisk together the flour, baking soda, baking powder and salt Set aside.
Cream the sugar and butter in the bowl of an electric mixer with the paddle attachment or with a handheld mixer on medium speed until smooth and combined.
Scrape down the sides of the bowl then add the eggs and blend well then add the vanilla.
With the mixer on low speed, gradually add the dry ingredients followed by the sprinkles then the chocolate chips.
Use a 2 ounce cookie scoop* to drop the cookies onto the cookie sheet. Place them 3″ apart. Cover the cookie dough balls with plastic wrap and chill for at least an hour.
After chilling the dough for at least an hour, preheat oven to 375 F. Keep remaining balls in fridge while the first batch bakes.
Bake 11-13 minutes until edges have started to turn light brown. Let cool on the baking sheet for 5 minutes before then transferring them to a rack to cool completely.
Notes
Use a cookie scoop. Forming the dough balls with a cookie scoop is less messy. It also makes sure the cookies are all the same size and bake evenly.Cookie scoop size. This recipe makes about 17 cookies using a 2 tablespoon cookie scoop and 27 cookies using a 1.5 tablespoon scoop. Bake 2 tablespoon cookies for 11-13 minutes. Bake 1.5 tablespoon sized cookies for 9-11 minutes.Chill the dough. Chilling the cookie dough is important. This is a buttery dough and the colder the cookie dough, the less the cookies will overspread when baking. Scoop the dough before chilling, pop the dough balls in the fridge for a couple hours, then bake! Storage. Store leftover Birthday Cake Cookies in an airtight container at room temperature for 5 days.Nutritional Information. The nutrition information provided is an estimate. The calorie accuracy is not guaranteed.