Hostess Coffee Cake for 15 Servings

Instructions:

1. In a medium bowl, whisk together the flour, brown sugar, cinnamon, and salt for the streusel.
2. Add the cold, cubed butter to the streusel mixture. Use a pastry cutter or fork to work the butter in until the mixture resembles coarse crumbs with pea-sized lumps. Set aside in the fridge.
3. Preheat oven to 350°F (175°C) and grease a 9x9 inch baking pan or line it with parchment paper.
4. Cream together the softened butter and granulated sugar on medium-high speed until pale and fluffy, about 3 minutes.
5. Add eggs one at a time, beating well after each addition, then stir in the vanilla extract.
6. In a separate bowl, whisk together the flour, baking powder, and salt.
7. In a small bowl, whisk together the sour cream and milk until smooth.
8. Alternately add the dry ingredients and the sour cream/milk mixture to the butter mixture, beginning and ending with the flour. Mix on low until just combined.
9. Pour half of the batter into the prepared pan and smooth the top.
10. Mix the cinnamon swirl ingredients (flour, brown sugar, cinnamon) in a small bowl and sprinkle evenly over the first layer of batter.
11. Pour the remaining batter over the cinnamon layer and spread gently.
12. Generously sprinkle the chilled streusel over the top, pressing very lightly to adhere.
13. Bake for 35–40 minutes until a toothpick inserted in the center comes out clean.