These rich, moist double chocolate chip muffins pack intense chocolate flavor from cocoa powder and melty chocolate chips, with a touch of instant espresso powder to deepen the chocolate without tasting like coffee. Perfect for breakfast, snacks, or dessert—yields 12 standard muffins.
¾c.(75g)unsweetened cocoa powder natural or dutch-process
1c.(200g)granulated sugar
1½tsp.instant espresso powderoptional but recommended
1tspbaking powder
½tsp.baking soda
½tsp.salt
Wet Ingredients
2large eggsroom temperature
1c.(240g)buttermilk or milk + 1 tbsp vinegar/lemon juice
½c.(110g)avocado or melted butter for richer flavor
2tsp.vanilla extract
Add-ins
1½c.(255g)semi-sweet chocolate chipsreserve about ¼ cup for topping
1tsp.unbleached all-purpose flour
Instructions
Preheat the oven to 425°F (220°C). Line a 12-cup muffin tin with paper liners or grease well.
In a large bowl, sift the flour, cocoa powder, sugar, espresso powder, baking powder, baking soda, and salt together (sifting helps avoid lumps for even batter).
In a medium bowl, whisk the eggs, buttermilk, oil (or melted butter), and vanilla extract until smooth.
Pour the wet ingredients into the dry ingredients and stir gently with a spatula until just combined—do not overmix; a few lumps are okay.
In a small bowl, toss the 1½ cups chocolate chips with a teaspoon of flour until they're evenly but lightly coated—no clumps. Fold into the batter.
Divide the batter evenly among the muffin cups, filling them nearly to the top. Sprinkle the reserved chocolate chips on top.
Bake at 425°F for 5 minutes, then reduce to 350°F (175°C) without opening the door. Bake another 15–18 minutes, or until a toothpick comes out with a few moist crumbs.
Cool in the tin for 5 minutes, then transfer to a wire rack. Enjoy warm!
Video
Notes
Espresso powder: optional—skip for pure chocolate flavor or increase to 1 tablespoon for stronger mocha notes.
For deeper chocolate: Bloom cocoa by mixing with hot buttermilk first.