Chocolate Marble Coffee Cake
Tender and delicious Chocolate Marble Coffee Cake made with sour cream, a rich dark chocolate swirl and a crunchy brown sugar top!
Ingredients
- 2 ½ oz 70g dark chocolate, finely chopped
- 1 ½ cups 215g all-purpose flour
- 1 ½ teaspoon baking powder
- ¼ teaspoon baking soda
- ½ teaspoon ground cinnamon
- ⅛ teaspoon freshly grated nutmeg
- ¼ teaspoon salt
- ⅓ cup 75g unsalted butter, melted and cooled
- 1 tablespoon 15ml sunflower oil
- ¾ cup plus 3 tablespoon 165g plus 50g packed light brown sugar, divided
- 1 large egg at room temperature
- ¾ cup 180ml full fat sour cream, at room temperature
- 1 teaspoon 5ml pure vanilla extract
Instructions
- Preheat the oven to 325 degrees F. Line an 8x8-inch pan with parchment paper leaving a 2-inch overhang at each end.
- Place chocolate in a heatproof bowl set over a pot with ½-inch of barely simmering water and stir until completely melted and smooth; set aside.
- Sift flour, baking powder, baking soda, ground cinnamon, nutmeg and salt into a medium bowl and whisk to blend evenly.
- Combine cooled melted butter, oil and ¾ cup of brown sugar in a large bowl and beat with an electric hand mixer on medium-high speed for about 2 minutes until pale and fluffy. Beat in eggs until evenly combined and smooth. Add sour cream and vanilla and mix until well incorporated.
- Add half of the flour mixture and mix on low speed until just blended. Add the remaining flour mixture and fold it in by hand using a large rubber spatula until evenly combined and smooth. Do not over mix. The batter will be very thick. Take about ¾ cup of batter and mix it with melted chocolate so it is evenly blended.
- Spoon regular batter into prepared pan and spread it out. Dollop chocolate batter randomly over top and swirl it in with a knife. Sprinkle remaining 3 tablespoons of brown sugar evenly over top, patting it down slightly so that it sticks to the surface. Bake for 25-30 minutes until a skewer inserted into the center comes out clean. Transfer cake to wire rack and let cool completely in pan.
