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Cinnamon Streusel Coffee Cake with Vanilla Glaze

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A moist and tender cinnamon streusel coffee cake layered with a brown sugar-cinnamon crumble and finished with a sweet vanilla glaze — perfect for breakfast, brunch, or a cozy dessert.

Ingredients

Scale
  • 1/2 cup unsalted butter, softened
  • 1 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup sour cream
  • 1 3/4 cups all-purpose flour
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1/2 cup brown sugar (for streusel)
  • 1 tablespoon ground cinnamon (for streusel)
  • 2 tablespoons all-purpose flour (for streusel)
  • 2 tablespoons cold unsalted butter, cubed (for streusel)
  • 1/2 cup powdered sugar (for glaze)
  • 12 tablespoons milk (for glaze)
  • 1/2 teaspoon vanilla extract (for glaze)

Instructions

  1. Preheat oven to 350°F (175°C). Grease and flour an 8×8-inch or 9×9-inch baking dish.
  2. In a mixing bowl, cream together softened butter and granulated sugar until light and fluffy.
  3. Add eggs one at a time, beating well after each addition. Mix in vanilla extract and sour cream.
  4. In a separate bowl, whisk together flour, baking powder, baking soda, and salt. Gradually add dry ingredients to the wet ingredients and mix until just combined.
  5. In another bowl, prepare the streusel by mixing brown sugar, cinnamon, and flour. Cut in cold butter with a fork or pastry cutter until crumbly.
  6. Spread half the cake batter into the prepared pan. Sprinkle half the streusel over the batter.
  7. Add remaining batter on top and spread gently. Sprinkle with the remaining streusel.
  8. Bake for 35–40 minutes, or until a toothpick inserted in the center comes out clean. Let cool in the pan.
  9. For the glaze, whisk together powdered sugar, milk, and vanilla extract until smooth. Drizzle over the cooled cake before serving.

Notes

  • Use Greek yogurt as a substitute for sour cream if needed.
  • Cake stays moist for several days when covered and stored at room temperature.
  • Double the recipe for a 9×13-inch pan.

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