Gluten Free Blueberry Coffee Cake with Pecan Streusel
This gluten free blueberry coffee cake gets a tender crumb from butter and sour cream and earthy flavor from brown sugar, oat, and sorghum flours. A layer of jammy blueberries and addictive salty-sweet streusel take it over the top. Feel free to try any soft seasonal fruit you like in place of the blueberries. If you're using frozen and not defrosted blueberries, the cake may take up to an additional 15 minutes to bake.
Prep Time: 30 minutesminutes
Cook Time: 55 minutesminutes
Total: 1 hourhour25 minutesminutes
Servings: 8-10 servings
Ingredients
Streusel Topping:
⅓cup(35 g) almond flour
⅓cup(35 g) coarsely chopped or broken pecans
¼cup(25 g) old fashioned rolled oats
¼cup(25 g) oat flour
1tablespoon(7 g) tapioca flour
⅓cup(70 g) packed light brown sugar
½teaspoonkosher salt
¼teaspoonground cinnamon
⅛teaspoonfreshly grated nutmeg
4tablespoonsmelted unsalted butter
Cake:
8tablespoons(115 g) unsalted butter, softened, plus 1 teaspoon for the pan
¾cup(150 g) organic light brown sugar
2large eggs, at room temperature
½cup (80 g) sweet white rice flour
½cup (65 g) sorghum flour (millet and ivory teff flour can be substituted)
½cup (55 g) GF oat flour
2tablespoons(14 g) tapioca flour
2teaspoonsbaking powder
½ teaspoon baking soda
½teaspoon fine sea salt
½cup (115 g) sour cream, crème fraiche, or Greek yogurt, plus extra for serving if desired
1 ½teaspoonsvanilla extract
2 ¼cups(300 g) fresh or frozen blueberries, plus a few extras for the top
In a medium bowl, stir together the almond flour, pecans, oats, oat flour, tapioca flour, sugar, salt, cinnamon, and nutmeg. Stir in the butter until large clumps form. Set aside.
Make the cake:
Position a rack in the center of the oven and preheat to 350º.
Rub a 9-inch round cake pan or springform pan with butter and line the bottom and sides with a piece of parchment paper.
In the bowl of a stand mixer fitted with the paddle (or a bowl with a wooden spoocream the butter and sugar together on medium speed until light and fluffy, 3 - 4 minutes, scraping down the sides of the bowl once or twice.
Add the eggs one at a time, beating until combined after each addition. The mixture may look broken.
Meanwhile, sift the sweet rice, sorghum, oat, and tapioca flours into a medium bowl along with the baking powder, baking soda, and salt into a medium bowl.
Stir together the sour cream and vanilla.
With the mixer on low, add half of the flour mixture, mixing until combined. Add the sour cream mixture, beating until combined. Add the remaining flour mixture and beat until combined, then increase the mixer to medium speed and beat until the batter is light and fluffy, 20 seconds longer. (Wheat based batters shouldn’t be beaten vigorously, but here it helps aerate the gluten free batter.) Give the batter a final fold with a rubber spatula to make sure it is homogenous, scraping down the sides and bottom of the bowl and beater.
Spread a little more than half the batter in the bottom of the pan. Sprinkle the berries evenly over the batter in a single layer. Sprinkle the lemon zest over the berries. Dollop the remaining batter over the berries and spread to cover. Sprinkle the streusel over the cake, squeezing it into almond sized clumps if necessary. Tuck a few extra blueberries into the streusel.
Bake the coffee cake for 45-55 minutes until it is golden brown and a toothpick inserted near the center comes out clean or with a few crumbs. Let cool completely or until just warm.
Remove the cake from the pan and cut it into wedges. Dust with powdered sugar and serve slices with a drizzle of blueberry glaze.
The coffee cake is best the day it's baked when the streusel is crisp, but leftovers keep well for up to 3 days in the refrigerator.
Notes
Variation: Gluten Free Rhubarb Coffee Cake:In place of the blueberries, use 2 cups rhubarb cut into ½ - 1 inch pieces and tossed with 2 tablespoons granulated sugar.Gluten-Free Dairy-Free Blueberry Coffee Cake: Use vegan butter in place of the dairy butter, reducing the salt in the cake and streusel of the butter is very salty. In place of the sour cream, use a rich vegan yogurt such as Cocojune or Culina, or vegan sour cream. Nutrition facts are for 1 of 8 servings.