Coffee Cake with a Cinnamon Sugar Ripple and Crumbly Streusel Topping

My deliriously soft coffee cake has a surprise ripple of cinnamon in the middle and a super simple streusel topping. This recipe takes just 30 minutes to prep and makes enough to feed a crowd (if you're willing to share!).

Ingredients

• ½ cup unsalted butter softened (113g)
• 8 oz cream cheese softened (225g)
• 1 cup light brown sugar tightly packed (200g)
• ½ cup granulated sugar (100g)
• 2 large eggs
• 1 ½ teaspoon vanilla extract
• 2 ½ cups all-purpose flour (335g)
• 2 teaspoons baking powder
• 1 teaspoon cornstarch
• ½ teaspoon salt
• ½ cup buttermilk (120ml)

Cinnamon Swirl

• ¼ cup sugar (50g)
• 1 ½ teaspoon cinnamon

Streusel Topping

• 1 ⅓ cup all-purpose flour (175g)
• 1 cup + 2 Tbsp brown sugar packed (225g)
• 3 Tablespoons granulated sugar
• 4 ½ teaspoons cinnamon
• ¼ teaspoon salt
• 10 Tablespoons unsalted butter melted (140g)

Glaze (optional)

• ½ cup powdered sugar (65g)
• 2-3 teaspoons milk