Soft, sweet, and packed with blueberries and a slightly crisp, sweet streusel topping, this melt-in-your-mouth blueberry coffee cake is the best way to enjoy cake for breakfast.
1cup + 2 Tablespoons(225g)light brown sugarfirmly packed
3Tablespoonsgranulated sugar
¼teaspoonssalt
10Tablespoons(140g)unsalted buttermelted and cooled until no longer hot to the touch
Instructions
Preheat oven to 350F (175C) and lightly grease and flour a 13x9 baking pan.⁴
Combine butter, cream cheese, and sugars and use an electric mixer (or a stand mixer) to cream together ingredients until well-combined, light, and fluffy.
½ cup unsalted butter, 8 oz cream cheese, 1 ¼ cup granulated sugar, ¼ cup light brown sugar
Add eggs and vanilla extract and beat on medium-low speed until combined, pausing to scrape the sides and bottom of the bowl.
2 large eggs, 1 teaspoon vanilla extract
In separate bowl whisk together flour, baking powder, cornstarch and salt.
2 ½ cups all-purpose flour, 2 teaspoons baking powder, 1 Tablespoon cornstarch, ¾ teaspoon salt
Add about ¼ of the flour mixture and stir on low speed until just combined. Add about ⅓ of the buttermilk and stir until combined. Continue to alternate adding flour and buttermilk until all are added and mixture is completely combined.
½ cup buttermilk ¹
Use a spoon or spatula to stir in the blueberries.
2 ¼ cup blueberries²
Spread batter into prepared pan (batter will be thick) and prepare streusel, if using.
Streusel
To make streusel, whisk together flour, sugars, and salt. Drizzle in melted butter and use a fork to stir/toss together until mixture is clumpy but combined (all the butter should be absorbed). Do not use butter that is too hot and do not over-mix or the mixture will be like a paste! It should be clumpy and crumbly.
1 ⅓ cup all-purpose flour, 1 cup + 2 Tablespoons light brown sugar, 3 Tablespoons granulated sugar, ¼ teaspoons salt, 10 Tablespoons unsalted butter
Sprinkle streusel evenly over batter.
Bake on 350F for 55-60 minutes or until a toothpick inserted in the center yields moist crumbs or no crumbs.
Allow to cool before cutting and serving.
Video
Notes
¹Buttermilk: You may substitute regular milk, but the cake may not be quite as flavorful or moist. You can also try my buttermilk substitute.²Blueberries. You can use fresh or frozen blueberries. Do not thaw if using frozen.³Streusel. You may omit the streusel completely or substitute a simple sprinkling of granulated sugar instead. The blueberry coffee cake will need less time in the oven (start checking at 40 minutes).⁴Baking pan. I bake this recipe in a metal baking pan. If using a glass baking dish you will most likely need more time in the oven.