Preheat oven to 350°.
While the oven is preheating make the cookie dough. Cream together the butter and sugar until light and fluffy.
1 1/2 cups (333g) salted butter, 1 1/2 cups (345g) granulated sugar
Scrape the sides, add in the eggs, and cake batter flavoring. Beat until mixed.
3 eggs, 1 1/2 tsp cake batter flavoring
Scrape the sides and add in the flour, & baking powder. Mix until thoroughly combined. Add sprinkles to the cookie dough, if desired.
4 1/2 cups (684g) all-purpose flour, 3 tsp baking powder, 1/4 cup (54g) sprinkles
Scoop out 1/3 cup of dough and roll into a ball. Repeat with remaining dough.
Flatten the cookie dough by gently so it is in the shape of a hockey puck. Repeat with remaining dough.
Arrange 6 cookies per pan. Bake at 350° for 12-15 minutes or until the centers of the cookies have puffed up and are no longer glossy.
While the cookies are cooling, make the frosting, by whipping the butter, cream cheese until smooth.
8 oz cream cheese, 1/4 cup (56g) salted butter
Add the powdered sugar, one cup at a time, mixing each time until it is fully incorporated.
4 cups (428g) powdered sugar
Add in the cake batter flavoring. Add milk a tsp at a time until you've reached your desired consistency, if needed.
1/2 tsp cake batter flavoring, milk
Add the frosting to a gallon sized zip top bag, cut the corner of the bag and use it to pipe the frosting onto the warm cookies in a spiral.
Sprinkle some sprinkles on top- serve warm!