Preparation20 minsCook Time35 minsTotal Time 55 mins
1 1/2 cups all-purpose flour
1/2 cup granulated sugar
2 1/2 teaspoons baking powder
1/2 teaspoon kosher salt
1 large egg
1/2 cup milk
1/4 cup sour cream
2 tablespoons unsalted butter, melted and cooled
2 teaspoons pure vanilla extract
2 1/2 cups all-purpose flour
1 cup light-brown sugar, firmly packed
3 teaspoons ground cinnamon
Pinch kosher salt
1 cup unsalted butter, melted and cooled
Powdered sugar, for dusting
Preheat oven to 325 degrees F. Lightly brush a 9" square baking pan with butter and dust with flour. Set aside.
In a medium bowl, sift together flour, granulated sugar, baking powder, and salt; set aside.
In a second bowl, whisk together the egg, milk, sour cream, butter, and vanilla. Using a rubber spatula, fold the dry ingredients into wet mixture. Spread batter evenly into prepared pan, and bake for 10 minutes.
While cake is par-baking, make crumb topping. In a bowl, whisk together flour, brown sugar, cinnamon, and salt. Pour the melted butter over the flour mixture, then toss with a fork or rubber spatula until large crumbs form.
After 10 minutes, remove cake from over and top evenly with crumb topping. Return to oven and continue to bake for 20-25 additional minutes until cake is firm to the touch, and a toothpick inserted comes out dry. Cool completely, then dust with powdered sugar as desired.
Amount Per Serving
Calories437kcalCalories from fat 174
% Daily Value
Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs: