Ingredients
Equipment
Method
Prep and heat
- Preheat the oven to 425F and line a 12-cup muffin tin. Use liners if desired so the domed muffins release cleanly.
Mix dry and wet
- Whisk together all-purpose flour, cocoa powder, baking powder, baking soda, espresso powder, and salt until evenly combined. You should see no streaks of cocoa.
- Whisk granulated sugar, brown sugar, eggs, buttermilk, vegetable oil, strong brewed coffee, cooled, and vanilla until smooth and glossy. Pause to scrape the bowl so no egg is left unmixed.
Combine and fill
- Fold the dry ingredients into the wet ingredients until just combined. Stop as soon as no dry pockets remain for a tender crumb.
- Fold in the dark chocolate chips. The batter should look thick and speckled, with chips suspended throughout.
- Fill the muffin cups to the very top and sprinkle espresso powder over each. The tops should look evenly dusted.
Bake for tall domes
- Bake at 425F for 5 minutes. The high initial heat should help the muffins rise quickly into domed tops.
- Reduce the oven to 350F and bake 13-15 more minutes. They’re done when the centers spring back lightly and a toothpick comes out with moist crumbs.
Notes
For the tallest domes, fill the liners all the way to the top and avoid overmixing—fold only until combined. Store airtight in the fridge up to 4 days, and rewarm briefly for best texture. Freezing is yes: freeze cooled muffins up to 2 months and thaw at room temperature. For a lower-sugar option, reduce granulated sugar by up to 1/4 cup and keep the rest the same.
