A simple, moist coffee cake that's packed with plump, juicy blueberries and topped with an irresistible cinnamon crumb. Perfect for summer, or any time of year, really!
Preheat oven to 350°F (175°C). Line a 9”x 13” baking pan with parchment paper or foil and butter the lining.
Whisk together the flour, baking powder, and salt. Set aside.
Using a heavy-duty mixer on medium speed, beat the butter and sugar until soft and light (about 5 minutes). Add the whole eggs, one at a time, beating well after each addition. Beat in the vanilla.
On low speed, add half the flour mixture and mix well. Add the egg yolks, mixing well, then add the remaining flour mixture.
Transfer the batter into the prepared pan, and spread evenly. Scatter the blueberries over the batter.
To make the crumb topping:
Combine the flour, sugar, cinnamon, and nutmeg. Stir in the melted butter and combine with your fingers until the mixture is coarse crumbs. Scatter the crumbs evenly over the berries.
Bake for 40 minutes, or until the cake is firm.
Cool the cake in the pan on a wire rack.
Notes
Recipe slightly adapted from Perfect Cakes.
To store. Wrap the cooled blueberry cake tightly in the pan or transfer pieces to an airtight container. Store it at room temperature for 3 to 4 days, but note that it tastes best on the day that it is made!Â
To freeze. Wrap the slices well or place them in an airtight container and freeze them for up to 3 months. Thaw the cake in the refrigerator, then bring it to room temperature before serving.