Sprinkle cookies are colorful, fun, AND delicious! Baked to perfection, these cookies will be a hit at any party with all of your family and friends! They are a favorite tried and true recipe and everyone will go crazy over them!
Preheat oven to 350°. Line two baking sheets with parchment paper and set aside.
In a large bowl whisk together the flour, baking powder, salt, cornstarch, and cream of tartar. Set aside.
In another bowl or in the bowl of a stand mixer beat the butter and sugar together until smooth. Add in the egg and extracts and mix until combined.
Add the dry ingredients to the sugar mixture and mix until combined. Mix in 1/3 cup of the sprinkles by hand. Use a cookie scoop to scoop the dough and press the tops of each ball of dough in the remaining sprinkles.
Place on a cookie sheet leaving 2 inches between cookies. Bake for 10-12 minutes. The middle should still be gooey when removed from the oven. Allow them to cool on the tray. They will finish cooking there. Store in an airtight container.