Mocha Streusel Walnut Espresso Coffee Cake

Total Time: 55 mins Preparation Time: 20 mins Cook Time: 35 mins

Ingredients

• 1/2 cup packed light brown sugar
• 1/4 cup all-purpose flour
• 3 tablespoons unsweetened cocoa
• 1 teaspoon ground cinnamon
• 3 tablespoons unsalted butter, chilled
• 1/2 cup unsalted butter, softened
• 3/4 cup sugar
• 2 tablespoons instant espresso coffee powder
• 2 eggs
• 1 teaspoon vanilla extract
• 2 cups all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 3/4 cup sour cream or 3/4 cup plain yogurt
• 1/2 cup powdered sugar
• 1 1/2 tablespoons milk
• 1/4 teaspoon vanilla extract

Recipe

• 1 heat oven to 350*. spray 9" square baking pan with cooking spray.
• 2 combine all streusel ingredients except butter in bowl or food processor. cut in 3 tbsp butter with pastry blender or 2 knives or pulse until coarse crumbs form.
• 3 beat 1/2 cup butter in large bowl at medium speed until creamy. add sugar; beat 3 minutes or until fluffy. combine coffee powder and 2 tbsp hot water; beat into butter mixture, along with eggs and 1 tsp vanilla until blended.
• 4 whisk 2 cups flour, baking powder, baking soda and salt in medium bowl. at low speed, beat in flour mixture in 3 parts alternately with sour cream, beginning and ending with flour mixture. spread half of the batter in pan; sprinkle with half of the streusel. spread with remaining batter; sprinkle with remaining streusel.
• 5 bake 30 to 35 minutes or until toothpick inserted in center comes out clean. cool on wire rack 15 minutes.
• 6 meanwhile, whisk all glaze ingredients in small bowl. drizzle over cake. serve warm or at room temperature.