Preheat the oven: Preheat the oven to 350°F (177°C). Line two large baking sheets with parchment paper.
Whisk butter and sugars: In a large mixing bowl, whisk together the melted butter, dark brown sugar, and granulated sugar until smooth and glossy.
1 cup unsalted butter, 1 cup dark brown sugar, 1 cup granulated sugar
Add wet ingredients: Add the eggs, red gel food coloring, vinegar, and vanilla, and whisk until fully combined.
2 large eggs, 1 tsp. red gel food coloring, 1/2 tsp. distilled white vinegar, 1½ tsp. vanilla extract
Combine dry ingredients: In a separate bowl, whisk together the flour, cocoa powder, baking soda, salt, and espresso powder.
3 cups all-purpose flour, 1/4 cup unsweetened cocoa powder, 1 tsp. baking soda, 1 tsp. fine sea salt, 1/4 tsp. espresso powder
Combine wet and dry: Gradually fold the dry ingredients into the wet ingredients using a rubber spatula or wooden spoon. Mix until no streaks of flour remain, being careful not to overmix. Cover with plastic wrap and chill for 30-60 minutes. Start Timer
Scoop and roll: Scoop about 2 tablespoons of dough per cookie and roll into balls. Roll each dough ball in granulated sugar before placing them on the prepared baking sheet, spacing about 2 inches apart. ~1/4 cup granulated sugar
Bake: Bake for 8–10 minutes, or until the edges are set and the centers still appear soft. The cookies will continue to set as they cool. Always underbake! Immediately after baking, cookie-scoot into perfect circles using a round cutter. Start Timer
Cool: Let cookies cool on the baking sheet for ~5 minutes before transferring to a wire rack to cool completely. Sprinkle with any leftover granulated sugar, if you’d like!
Decorate: Once cooled, dip cookies with melted white chocolate wafers and top with festive sprinkles, if using. Allow the chocolate to set before serving or storing. ENJOY!
White chocolate melting wafers, Sprinkles