Espresso And Dark Chocolate Chip Coffee Cake

Ingredients:

• Topping: ½ cup oats, ½ cup brown sugar, ¼ cup flour, 1 tbsp instant espresso powder, 4 tbsp melted butter.
• Cake: 2 cups all-purpose flour, 1 tsp baking powder, ½ tsp baking soda, ½ tsp salt, ½ cup unsalted butter (melted and cooled), ¾ cup granulated sugar, ¼ cup brown sugar, 2 large eggs, ½ cup buttermilk, ½ cup strongly brewed espresso (cooled), 1 cup dark chocolate chips.

Instructions:

1. Preheat oven to 350°F (175°C). Line a 9×9-inch pan with parchment paper.
2. Stir all topping ingredients together until clumpy; set aside.
3. Whisk melted butter and both sugars together. Beat in eggs, buttermilk, and cooled espresso.
4. Fold in flour, baking powder, baking soda, and salt until just combined, then stir in the chocolate chips.
5. Pour into the pan, scatter the espresso oat topping evenly, and bake for 30–35 minutes.