These are traditional Italian cookies normally served at Christmas, but they're just too cute to leave for the holidays. Make them any time of year - a kids birthday party or baby shower!
Preheat oven to 350°F.
In a large bowl, combine flour with baking powder and baking soda and set aside.
In another large bowl, using a hand mixer or in a stand mixer, cream butter with sugar until soft and fluffy. Then add vanilla or almond extract and gradually add the egg substitute in portions while continuing to beat the mixture together. If using a stand mixer you can continue to mix in the ricotta and zest on low speed until well combined or use a spatula to fold it into the mixture by hand.
Gradually add portions of the flour mixture and fold it into the batter until you have a soft and smooth ball of dough.
For the icing, combine the powdered sugar with 1 tablespoon of nondairy milk until smooth. Gradually add extra teaspoons of milk until you get a smooth and oozing icing. The icing should move slightly on the cookie but not drip a lot down the sides.
Dip the tops of each cookie into the icing, allowing excess to drip off. Place face up on the baking sheets and add rainbow sprinkles. Let the cookies sit out to dry the icing. To store cookies, place in containers between layers of parchment paper at room temperature with a loose fitting lid or wrapped loosely with plastic wrap. Some air can get in. If you seal the containers air tight for storage, that may make the icing sugar become moist and absorb into the cookies. Thaw batches to room temperature before serving.
Grandma's original recipe included anise extract in replace of almond or vanilla, but that flavor isn't my favorite! You can substitute as you like.