I can’t think of a better way to treat someone you love on their birthday than with these fun Birthday Cake Cookies!
Add baking powder, extract, and salt, and mix until combined.
Add eggs, one at a time, until completely combined. Scrape the sides of the bowl as needed.
Alternate adding the flour and milk to the butter mixture and mix until completely combined. (Do not overmix)
Add rainbow jimmies to the batter and gently combine by hand.
Whipped Vanilla Buttercream Recipe (click for recipe)