🧁 This cookie is basically a cupcake that you can hold in your hand! Crumbl nailed the rich chocolate cake texture with a fudgy center and topped it with swirls of buttercream frosting. The cookie stays moist and fluffy like an actual cupcake, but the edges get that signature Crumbl crisp. If you're a chocolate lover who craves bakery-style cupcakes, this delivers without the fork.
Preheat oven to 350°F (175°C) and line two large baking sheets with parchment. This ensures signature even baking and crisp edges.
In a stand mixer, cream 1 stick softened butter, 2 oz softened cream cheese, granulated sugar, and brown sugar for at least 3–4 minutes until very fluffy and light. This long creaming is key for Crumbl’s cupcake-like crumb.
Beat in eggs one at a time, then mix in vanilla extract. Scrape bowl as needed.
In a separate bowl, whisk together flour, cocoa powder, cornstarch, baking powder, baking soda, and sea salt. Add to wet mixture and mix on low until halfway combined.
Add whole milk and mix just until a thick, scoopable dough forms—don’t overbeat. Dough should be very soft but not sticky.
Portion dough into 8 large balls (about 4.5 oz each, nearly ½ cup). Shape into tall mounds and chill on a tray in the fridge for at least 45 minutes—this prevents excessive spreading and helps maintain thickness, just like Crumbl.
Bake chilled dough balls for 11–13 minutes. Cookies will look puffy and slightly underdone in the center but set at the edges. Do not overbake—fudgy centers are a must for copycat accuracy.
Cool cookies on tray 10 minutes, then transfer to a rack. While they cool, make buttercream: beat 1.5 sticks butter until creamy, then add powdered sugar gradually, vanilla, pinch salt, and heavy cream as needed to reach a soft, pipeable texture.
Once cookies are fully cooled, pipe swirls of buttercream on top (start in the center and spiral outward for the true Crumbl look). Serve immediately or chill for a firmer swirl!