Active Time:

20 mins

Total Time:

1 hr 35 mins

Servings:

12

Nutrition Profile:

Ingredients

1/2cup packedlight brown sugar

3tablespoonsall-purpose flour

3tablespoonswhole-wheat pastry flour

2tablespoonsunsalted butter, softened

2teaspoonsground cinnamon

1/4teaspoonsalt

Baking spray with flour

1/2cupgranulated sugar

6tablespoonsunsalted butter, softened

1largeegg

1cupall-purpose flour

1cupwhole-wheat pastry flour

1 1/2teaspoonsbaking powder

1/2teaspoonbaking soda

1/4teaspoonsalt

1/2cupreduced-fat sour cream

1/4cupwater

2cups fresh frozen blueberries

2teaspoons grated lemon zest

1teaspoonvanilla extract

Directions

Preheat oven to 350°F. Coat an 8-inch-square baking pan with baking spray.

Prepare streusel: Stir brown sugar, 3 tablespoons each all-purpose flour and pastry flour, 2 tablespoons butter, cinnamon and 1/4 teaspoon salt together in a medium bowl until crumbly and combined. Refrigerate, uncovered, until ready to use.

Prepare cake: Beat granulated sugar and butter in a large bowl with an electric mixer on high speed until light and fluffy, 3 to 4 minutes, stopping to scrape down the sides of the bowl as needed.

Beat in egg until just combined.

Whisk all-purpose flour, pastry flour, baking powder, baking soda and salt together in a medium bowl until combined.

Beat the flour mixture into the sugar mixture in thirds on low speed, alternating with sour cream and water, and starting and ending with the flour mixture. Beat just until combined after each addition. Fold in blueberries, lemon zest and vanilla until evenly incorporated. (The batter will be thick.) Spoon the batter into the prepared baking pan, spreading evenly.

Sprinkle with the streusel, pressing gently to adhere.

Bake until a wooden pick inserted in the center comes out clean, 45 to 50 minutes. Let cool slightly on a wire rack, about 30 minutes. Cut into 12 pieces and serve.

To make ahead

Store cake in an airtight container at room temperature for up to 3 days.

Nutrition Information

Serving Size: 1 piece

Calories 262, Fat 10g, Saturated Fat 6g, Cholesterol 41mg, Carbohydrates 41g, Total sugars 20g, Added Sugars 17g, Protein 4g, Fiber 2g, Sodium 235mg, Potassium 116mg