These gluten-free Crumbl sugar cookies are soft, chewy, and topped with a rich buttercream frosting. This easy copycat recipe delivers bakery-style flavor and texture—no rolling or chilling required!
Preheat the oven to 350°F. Line two baking sheets with parchment paper.
Cream the butter, white sugar, and powdered sugar in a stand mixer with a paddle attachment on medium speed until light and fluffy (~2 minutes).
Whisk together the oil, egg, vanilla extract, and almond extract. Add to the creamed mixture and beat until fluffy and well combined.
In a small bowl, whisk together the gluten-free flour, baking soda, cream of tartar, and salt. Add to the wet ingredients and mix until a soft dough forms.
Scoop¼ cup portions using a large cookie scoop. Place 6-7 cookies per baking sheet, leaving space between each. Gently press down to ½ to ¾-inch thickness.
Bake for 13-15 minutes, until cookies spread slightly, tops are crinkled, and bottoms are light golden brown.
Cool on the baking sheets while making the frosting.
Almond Buttercream
Beat softened butter and powdered sugar until combined (it may look clumpy).
Mix in almond extract.
Add cream1 tablespoon at a time, mixing well after each addition, until the frosting is soft, fluffy, and spreadable (~3 tablespoons).
Frost each cooled cookie with a dollop of buttercream, smoothing with an offset spatula or butter knife.
Enjoy immediately or chill for a firmer texture. Store in an airtight container.
Notes
*Measure flour blend by weight if possible. Click the "Metric" button at the top of the ingredients list for weight measurements. If you don't have a scale: Fluff up your flour. Then gently spoon the flour into measuring cups and level off with a straight edge.For the perfectly soft and chewy texture, don't over-bake the cookies!