Preheat the oven to 400ºF. Whisk the flour, cake flour, baking soda, baking powder, and salt together in a large bowl. Set aside. 

Using a stand mixer and paddle attachment, cream together the butter and sugar. This should take about 2-3 minutes.

Add in the eggs, egg yolks and almond extract and blend until well mixed. Use a rubber spatula to get anything stuck off the sides. 

Turn the mixer on a low setting and gradually add in the flour mixture. About a ½ cup at a time. Add about ¼ to ½ cup of rainbow sprinkles. Mix until well incorporated. 

Using your hands, grab the dough to form a ball about an inch thick. Roll the ball into the rainbow sprinkles. Place on the cookie sheet. 

Repeat until the dough is gone. 

Bake for 9-11 minutes. Let them rest on a cookie sheet for about 15 minutes and then transfer to a cooling rack. Enjoy!