Christmas tree drop cookies are soft sugar cookies topped with green buttercream trees, colorful sprinkle ornaments, and a star on top. They’re a fun and festive Christmas cookie that’s easy to decorate without any rolling or cookie cutters.
In a stand mixer, cream together butter, cream cheese, and sugar. Add egg yolk and vanilla extract.
In a separate bowl, combine flour, baking soda, baking powder, and salt. Slowly add to the wet ingredients in the mixer until combined.
Using a 1.5-tablespoon cookie scoop, scoop mounds of cookie dough onto a parchment-lined baking sheet. Place in the refrigerator for 1 hour. This prevents spreading while they bake.
Preheat the oven to 400℉. Bake the cookies in the oven for 11-12 minutes, until the tops are set and the centers are slightly undercooked.
Buttercream Frosting
Add butter to a stand mixer with a whisk attachment. Whip the butter for 3-4 minutes, until it begins to get light in color, almost white. Add vanilla and milk. Slowly add powdered sugar. Add green icing gel until reaching the desired color. Whip the frosting until fluffy again, about 2-3 minutes.
Fit a piping bag with a small star tip, such as Wilton tip #21, and fill it with the green frosting. Pipe the frosting onto each cookie in a swirl, starting with a wide base and gradually narrowing toward the top to form a pointed Christmas tree shape.