In a stand mixer, mix together the butter and sugars on medium speed until completely combined. Mix in the egg, egg yolk, vanilla and almond extract, stirring until just combined.
3/4 Cup Unsalted Butter, 3/4 Cup Granulated Sugar, 3/4 Cup Powdered Sugar, 1 Tablespoon Light Brown Sugar, 1 Large Egg, 1 Egg Yolk, 1 teaspoon Vanilla, 1/2 teaspoon Almond Extract
Mix in the dry ingredients. Do not over-mix. Place the bowl in the fridge for a couple minutes to rest.
Using a cookie scoop, scoop out balls of dough and roll them in sugar (or sprinkles) and place on a cookie sheet lined with a silpat, cover them and set them in the fridge for at least 6 hours but preferably overnight.
1/4 Cup White Sugar, Sprinkles
Place cookies about 2 inches apart on a large cookie sheet lined with a silpat. Bake for 8-10 minutes. Transfer to a cooling rack. Sprinkle the cookies with a little decorative sugar (optional). Wait for them to cool as they are best after resting and enjoy!
Notes
To freeze sugar cookie dough, shape it into a log, wrap tightly in plastic wrap and put in an airtight container before freezing.