Ingredients
Method
- Preheat oven to 350°F (175°C) and line baking sheets with parchment paper or silicone mats.
- Cream softened butter until smooth, then beat in granulated sugar for 2–3 minutes until fluffy.
- Add eggs one at a time, then mix in vanilla extract until fully incorporated.
- Add cocoa powder and flour to the bowl, creating a well in the center.
- Add cream of tartar, baking soda, baking powder, salt, and optional cayenne into the well and lightly blend dry ingredients together.
- Mix on low speed until dough forms—do not overmix.
- Shape dough into balls using 2–3 tablespoons of dough each.
- Combine cinnamon and sugar in a shallow bowl and roll each dough ball until fully coated.
- Place dough balls 3 inches apart on baking sheets and bake for 10–12 minutes until edges are set and centers remain soft.
- Rest cookies for 2 minutes, then roll once more in the cinnamon sugar mixture for extra sparkle.
Notes
For a milder spice level, reduce cayenne to 1/8 teaspoon or omit entirely. For deeper flavor, chill dough for 30 minutes before baking.
