Blueberry Crumb Coffee Cake

Total Time: 1 hr 25 mins Preparation Time: 30 mins Cook Time: 55 mins

Ingredients

• Servings: 8
• butter, for greasing pan
• 1/2 lb blueberries
• 2 tablespoons sugar
• 2 teaspoons cornstarch
• 1/3 cup dark brown sugar
• 1/3 cup granulated sugar
• 1 teaspoon ground cinnamon
• 1/8 teaspoon salt
• 1/2 cup butter, melted
• 1 3/4 cups cake flour (or all-purpose)
• 1/3 cup sour cream
• 1 large egg
• 1 large egg yolk
• 2 teaspoons vanilla extract
• 1 cup cake flour (or all-purpose flour)
• 1/2 cup sugar
• 1/2 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1/4 teaspoon salt
• 6 tablespoons butter, softened & cut into 8 pieces

Recipe

• 1 preheat oven to 325ºf.
• 2 grease an 8-inch-square baking pan.
• 3 toss blueberries with sugar and cornstarch.
• 4 set aside.
• 5 to make crumbs, in a large bowl, whisk together sugars, spices, salt and butter until smooth.
• 6 stir in flour with a spatula. (it will look like a solid dough.).
• 7 to prepare cake, in a small bowl, stir together the sour cream, egg, egg yolk and vanilla.
• 8 using a mixer fitted with paddle attachment, mix together flour, sugar, baking soda, baking
• 9 powder and salt.
• 10 add butter and a spoonful of sour cream mixture and mix on medium speed until flour is moistened.
• 11 increase speed and beat for 30 seconds.
• 12 add remaining sour cream mixture in two batches, beating for 20 seconds after each addition, and scraping down the sides of bowl with a spatula.
• 13 scoop out about ½ cup of the batter and set aside.
• 14 scrape remaining batter into prepared pan. spoon blueberries over batter.
• 15 dollop set-aside batter over berries; it does not have to be even.
• 16 using your fingers, break topping mixture into big crumbs, about 1/2 inch to 3/4 inch in size. they do not have to be uniform, but make sure most are around that size.
• 17 sprinkle over cake.
• 18 bake cake until a toothpick inserted into center comes out clean of batter, 45 to 55 minutes. cool completely before serving.