Double Chocolate Muffins

Bakery-style double chocolate muffins with high domed tops, a deep cocoa-dark crumb, and plenty of chocolate chips throughout, baking up moist and tender inside with glossy melted chocolate pockets across the surface. Blooming the cocoa with hot coffee right at the end of mixing deepens the chocolate flavor without making the muffins taste like coffee, and starting the bake at a high temperature before dropping it is what pushes the tops into a tall dome instead of a flatter rise. Pulling them once a tester shows a few moist crumbs, rather than baking until completely dry, keeps the crumb rich and fudgy rather than cakey.

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Prep Time 20

Cook Time 22

Total Time 45

Servings: 12

Course: Baking, Muffins

Cuisine: American

Calories: 400

Ingredients Method Notes

Ingredients

For the Muffin Batter

250 g all-purpose flour
60 g unsweetened natural cocoa powder
180 g light brown sugar
80 g granulated sugar
2 tsp baking powder
½ tsp baking soda
¾ tsp fine salt
1 tsp espresso powder optional but recommended
2 large eggs room temperature
120 ml neutral oil
180 g sour cream room temperature
180 ml buttermilk room temperature
2 tsp vanilla extract
60 ml hot coffee or hot water
170 g semisweet or dark chocolate chips/chunks folded into the batter
40–60 g extra chocolate chips/chunks for topping

Method

Prepare the Pan and Oven

Heat the oven to 220°C / 425°F and line a 12-cup muffin pan with parchment tulip liners or sturdy muffin liners. A pan with deep wells, lined well, lets the batter rise upward rather than spread, for the tallest bakery-style tops.

Mix the Dry Ingredients

Whisk together the flour, cocoa powder, brown sugar, granulated sugar, baking powder, baking soda, salt, and espresso powder in a large bowl, breaking up any cocoa lumps fully so the batter mixes evenly later.

Mix the Wet Ingredients

Whisk together the eggs, oil, sour cream, buttermilk, and vanilla in a separate bowl or large measuring jug until smooth and fully blended.

Combine and Bloom the Cocoa

Pour the wet mixture into the dry ingredients and fold gently with a spatula until partly combined. Add the hot coffee or hot water and continue folding just until the batter turns uniform, then fold in the 170 g of chocolate chips. The batter should be thick but scoopable; don't overmix, since mixing past the point where the dry flour disappears tightens the muffins and reduces their dome. Let the batter rest for 10 minutes, which helps hydrate the flour and improves lift.

Fill and Top

Divide the batter evenly among the 12 muffin cups, filling them very full, about 85 to 90%, to encourage high domed tops. Scatter the extra 40 to 60 g of chocolate chips over the tops, pressing a few lightly into each mound of batter so they stay visible after baking.

Bake

Bake at 220°C / 425°F for 5 minutes, then, without opening the oven, reduce the heat to 190°C / 375°F and continue baking for 13 to 17 minutes more. The muffins are done when the tops are high and set, the surface is matte with a few glossy chocolate pockets, and a tester inserted into the crumb (avoiding any melted chocolate) comes out with a few moist crumbs rather than wet batter. By thermometer, the centers should read roughly 96–98°C / 205–208°F.

Cool

Cool the muffins in the pan for 5 to 8 minutes before transferring to a rack. Serve warm or just slightly cooled if you want the chocolate inside to stay soft and molten.

Notes

Hot coffee folded in at the end deepens the chocolate flavor considerably without leaving any coffee taste behind; hot water works as a substitute if you'd rather skip the coffee altogether.

Natural cocoa powder gives the classic dark, slightly tangy muffin profile this recipe is built around. Dutch-process cocoa will shift both the rise and the flavor balance somewhat, since it reacts differently with the baking soda.

The batter needs to stay thick rather than loose; a looser batter spreads instead of doming, so resist adding extra liquid even if the batter looks slightly stiff before the hot coffee goes in.

Mixing a few larger chocolate chunks in with smaller chips gives more visible melted pockets across the top and through the crumb than small chips alone would.