Enjoy the festive cheer with these easy-to-make Christmas Kitchen Sink Cookies, packed with holiday M&M's, chocolate, and pretzels, and topped with colorful sprinkles. They're a customizable, no-chill, drop cookie that's perfect for adding a sweet and salty treat to your holiday celebrations.
Preheat the oven to 350°F/180°C (160°C for a fan oven), and line a baking sheet with parchment paper or a Silpat silicone baking mat. Set aside.
In a medium mixing bowl, combine flour, baking soda, baking powder, and salt. Set aside.
In a separate mixing bowl, with a hand mixer, cream the butter and sugars until light and fluffy. Add egg, and vanilla extract, and beat again.
Add the flour mixture, a little at a time, mixing after each addition. If the dough gets too thick for your mixer, finish mixing the dough by hand.
Add holiday M&M's, chocolate chips, crushed pretzels, and sprinkles and give everything a quick mix to combine.
Use a medium cookie scoop to drop the dough onto the lined baking sheet, leaving two inches between each cookie.
Bake for 9-11 minutes, or until the edges are lightly golden brown.
Allow the cookies to cool on the pan for 2 minutes, then transfer to a wire rack to cool completely.
Notes
Use room temperature ingredients. It's important that the butter is soft for both the cookie dough and the frosting. Room-temperature eggs are also suggested, as they mix into the dough much better than cold ones.
Store shark cookies in an airtight container in the fridge for up to 3 days.
If you'd like to freeze these cookies, I'd suggest freezing them without the frosting. They'll keep in the freezer for up to 3 months. Thaw and frost as desired when you need them.