This sour cream coffee cake pairs beautifully with a cup of hot coffee! It’s moist and tender, with the perfect amount of cinnamon flavor running throughout. Freezer-friendly.
Ingredients
For the Cinnamon Filling:
- ⅔ cup packed light brown sugar (147g)
- ¼ cup all-purpose flour (30g)
- 2 teaspoons ground cinnamon
For the Streusel Topping:
- ¾ cup all-purpose flour (90g)
- ½ cup packed light brown sugar (110g)
- 2 teaspoons ground cinnamon
- ¼ teaspoon salt
- 6 tablespoons cold unsalted butter (diced (85g)
For the Cake:
- 1¾ cups all-purpose flour (210g)
- 2 teaspoons baking powder
- ¾ teaspoon salt
- 10 tablespoons unsalted butter (softened (142g)
- ¾ cup granulated sugar (150g)
- ¼ cup packed light brown sugar (55g)
- 2 large eggs (room temperature)
- ⅔ cup sour cream (room temperature (160g)
- 2 teaspoons vanilla extract
For the Vanilla Glaze: (optional)
- 1 cup powdered sugar (120g)
- 2 tablespoons whole milk
- ½ teaspoon vanilla extract
Instructions
- 1For the Cinnamon Filling:
- 2In a small bowl whisk together the brown sugar, flour, and cinnamon. Set aside.
- 3For the Streusel Topping:
- 4In a medium bowl, whisk together the flour, brown sugar, cinnamon, and salt. Add the diced butter. Use your clean fingers or the tines of a fork to press and crumble the butter into the dry mixture until the mixture is cumbly and resembles wet sand. For larger crumbles, squeeze a handful of the mixture together and break apart into large pieces. Set aside.
- 5For the Cake:
- 6Preheat the oven to 350°F. Lightly grease 8x8-inch square baking pan and line with parchment paper.
- 7In a medium bowl, whisk together the flour, baking powder, and salt.
- 8In a large mixing bowl or the bowl of a stand mixer fitted with the paddle attachment, beat the butter and both sugars on medium speed until light and fluffy, about 3 minutes. Add the eggs one at a time, beating well between each addition. Scrape the bowl down then add the sour cream and vanilla and mix on low speed until combined. Scrape down the bowl.
- 9Add the dry mixture to the wet mixture and beat on low speed until just until combined, then use a spatula to scrape the bowl down and mix any stray bits in.
- 10Spread half the of cake batter into the prepared pan and smooth out. Sprinkle the Cinnamon Filling on top. Dollop the remaining batter over the cinnamon filling, then spread it out into an evenly layer by moving from the center to the edges. Sprinkle the struesel over the top, starting at the edges, and working in towards the center. (This helps keep make sure there’s enough topping on the edges to keep the cake from rising unevenly.
- 11Bake for 55 minutes or until a toothpick inserted in the center comes out clean. Allow the cake to cool in the pan for 30 minutes before serving.
- 12For the Glaze:
- 13If making the glaze, whisk together the powdered sugar, milk, and vanilla in a small bowl until smooth. Drizzle over the coffee cake before or after slicing.