All of the flavors of classic coffee cake are wrapped up in these coffee cake muffins that include a cinnamon sugar center, buttery streusel, and lots of vanilla glaze.
Preheat oven to 425F. Line a 12-cup muffin tin with muffin liners and set aside.
In a large bowl, beat butter and sugars until smooth and creamy. Beat in eggs, yogurt, buttermilk, and vanilla until smooth.
In a separate medium bowl, combine flour, baking powder, baking soda, and salt. Fold into liquid mixture until batter is just combined. Fill muffin cups halfway with batter and set aside for a moment.
Cinnamon Sugar Filling
In a small bowl, combine sugar and cinnamon. Sprinkle an even amount of cinnamon sugar over partially-filled muffin cups and top with remaining batter, filling cups to brim.
Streusel Topping
In a small bowl, combine all streusel ingredients until crumbly. Sprinkle evenly over muffin batter, pressing lightly to adhere crumbs.
Bake muffins at 425F 5 minutes, then reduce heat to 375F and continue baking an additional 15-20 minutes until a toothpick inserted in center of muffin comes out clean.
Cool muffins 20 minutes in pan, then transfer to a wire cooling rack to cool completely.
Vanilla Glaze
In a small bowl, combine powdered sugar, vanilla, and just enough milk to achieve a drizzling consistency.
Drizzle glaze over cooled muffins and allow to set 5 minutes before serving. Enjoy!
Notes
Storing InstructionsStore muffins in an airtight container at room temperature up to 4 days. Muffins may also be frozen up to 2 months.