Description

This Chocolate Espresso Coffee Cake is a rich, moist, and tender chocolate coffee cake enhanced with espresso powder to deepen the cocoa flavor. With a buttery chocolate crumb topping, scattered chocolate chips inside, and a silky espresso glaze on top, this cake blends crunchy textures with soft cake for a bakery-style treat perfect for slow, cozy mornings or dessert.

Ingredients

Scale

For the Pan

1 teaspoon softened unsalted butter

For the Chocolate Crumb Topping

3/4 cup (90 g) all-purpose flour
1/3 cup (67 g) packed light brown sugar
2 tablespoons (10 g) unsweetened cocoa powder
1/8 teaspoon fine salt
4 tablespoons (57 g) unsalted butter, melted

For the Chocolate Espresso Cake

1 1/2 cups (180 g) all-purpose flour
1/2 cup (43 g) unsweetened cocoa powder
3/4 cup (150 g) granulated sugar
1 teaspoon baking powder
1/2 teaspoon baking soda
1/2 teaspoon fine salt
2 teaspoons instant espresso powder
2 large eggs
1/2 cup (120 g) sour cream
1/2 cup (120 ml) whole milk
1/2 cup (113 g) unsalted butter, melted and slightly cooled
2 teaspoons vanilla extract
1/2 cup (85 g) semisweet chocolate chips

For the Espresso Glaze

3/4 cup (90 g) powdered sugar
1 teaspoon instant espresso powder
1 tablespoon whole milk
1/2 teaspoon vanilla extract
Up to 1 additional teaspoon whole milk, if needed

Instructions

Prepare the Pan and Oven: Preheat your oven to 350°F (175°C). Spread 1 teaspoon softened unsalted butter inside an 8 x 8-inch or 9 x 9-inch square metal baking pan. Line the pan with parchment paper, leaving enough overhang on two sides to lift the cake out later.
Make the Chocolate Crumb Topping: In a medium mixing bowl, combine 3/4 cup flour, 1/3 cup light brown sugar, 2 tablespoons cocoa powder, and 1/8 teaspoon salt. Stir with a fork to mix evenly. Pour in 4 tablespoons melted unsalted butter and stir until moist chocolate crumbs form, leaving many crumbs chunky and marble-sized. Set aside.
Mix the Dry Cake Ingredients: In a large mixing bowl, whisk together 1 1/2 cups flour, 1/2 cup cocoa powder, 3/4 cup granulated sugar, 1 teaspoon baking powder, 1/2 teaspoon baking soda, 1/2 teaspoon salt, and 2 teaspoons instant espresso powder until no lumps remain.
Mix the Wet Ingredients: In another bowl, whisk 2 large eggs with 1/2 cup sour cream, 1/2 cup whole milk, 1/2 cup melted and slightly cooled unsalted butter, and 2 teaspoons vanilla extract until smooth and creamy.
Make the Chocolate Espresso Batter: Pour the wet ingredients into the dry ingredients. Gently fold with a rubber spatula until barely no flour is visible. Fold in 1/2 cup semisweet chocolate chips just until evenly dispersed. Do not overmix.
Add the Batter and Crumb Topping: Transfer the batter to the prepared pan, spreading evenly and into corners. Evenly scatter the chocolate crumb topping over the batter, keeping it loose and unpressed for a crumbly texture.
Bake the Coffee Cake: Bake at 350°F (175°C) for 35–42 minutes. Start checking at 35 minutes by inserting a toothpick into the center; it should come out with moist crumbs but no wet batter. Avoid toothpicks hitting melted chocolate. Cool in the pan for 25–30 minutes.
Make the Espresso Glaze: In a small bowl, whisk 3/4 cup powdered sugar, 1 teaspoon espresso powder, 1 tablespoon whole milk, and 1/2 teaspoon vanilla extract until smooth. If too thick, add up to 1 additional teaspoon milk slowly to achieve a drizzle consistency.
Glaze, Slice, and Serve: Use parchment paper to lift the cooled cake from the pan onto a serving plate. Drizzle the espresso glaze evenly over the crumb topping. Let glaze set for 5–10 minutes, then cut into 9 squares and serve.

Notes

Weigh flour if possible to avoid dry cake from too much flour.
Let melted butter cool before mixing with eggs and sour cream to avoid cooking the eggs.
Do not overmix batter to keep cake tender and moist.
Keep crumb topping chunky for better texture.
Check doneness with a toothpick rather than color.
Cool cake before glazing to avoid melting the glaze.
For milder coffee flavor, reduce espresso powder to 1 teaspoon or omit entirely for a pure chocolate coffee cake.
Substitute Greek yogurt for sour cream if preferred.
Add chopped toasted nuts for extra crunch.
Store at room temperature in airtight container up to 2 days or refrigerate up to 5 days.
Freeze unglazed slices wrapped tightly for up to 2 months; add fresh glaze before serving.

Prep Time: 20 minutes
Cook Time: 35–42 minutes
Category: Dessert
Method: Baking
Cuisine: American

Keywords: chocolate coffee cake, espresso coffee cake, chocolate espresso cake, chocolate crumb topping, espresso glaze, chocolate dessert, easy coffee cake