Description

This Sour Cream Coffee Cake combines a moist, buttery texture with the lively flavors of cinnamon and sugar. It’s incredibly simple to prepare, making it a perfect choice for gatherings or a cozy homemade treat!

Ingredients

Scale

½ cup milk
½ tablespoon white vinegar
2 cups multipurpose gluten free flour
1 ½ teaspoons baking powder
1 teaspoon baking soda
½ teaspoon kosher salt
4 rounded tablespoons cornstarch mixed with 6 tablespoons water
½ cup unsalted butter or vegan baking stick, room temperature
1 cup granulated sugar
¾ cup sour cream , full fat
1 ½ teaspoons pure vanilla extract
2 tablespoons granulated sugar
½ teaspoons ground cinnamon
1 ¼ cups multipurpose gluten free flour
½ cup light brown sugar , packed
¾ teaspoon ground cinnamon
½ cup unsalted butter or vegan baking stick, melted
confectioners' sugar (for dusting if desired)

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Instructions

Preheat the oven to 350°F. Grease a 9-inch springform pan and line the bottom with parchment paper, greasing the paper too.
Combine ½ cup milk with ½ tablespoon white vinegar. Let sit for 5-10 minutes to create homemade buttermilk.
In a large bowl, whisk together 1 ¾ cups gluten-free flour, 1 ½ teaspoons baking powder, 1 teaspoon baking soda, and ½ teaspoon kosher salt. Set aside.
In a medium bowl, mix 4 rounded tablespoons cornstarch with 6 tablespoons water until smooth and runny. Set aside.
In a large bowl, beat ½ cup unsalted butter with 1 cup granulated sugar until creamy—about 1-2 minutes.
Gradually add the cornstarch mixture, followed by ¾ cup sour cream and 1 ½ teaspoons vanilla extract. Mix until combined.
Slowly incorporate the gluten-free flour mixture until just combined, then slowly mix in the buttermilk until fully integrated. Scrape down the bowl as necessary.
Combine 2 tablespoons sugar with ½ teaspoon ground cinnamon in a small bowl.
Transfer half of the batter to the prepared pan, smooth the top, and sprinkle cinnamon sugar mixture over it. Add the remaining batter smoothly on top.

Notes

Ensure the butter is at room temperature for easier mixing.
If using a different flour blend, check for any additional binding requirements to maintain texture.
Dust the cake with confectioners’ sugar before serving for an elegant touch.

Nutrition

Serving Size: 1 slice
Calories: 350
Sugar: 20g
Sodium: 200mg
Fat: 15g
Saturated Fat: 9g
Unsaturated Fat: 3g
Trans Fat: 0g
Carbohydrates: 50g
Fiber: 2g
Protein: 5g
Cholesterol: 40mg