Blueberry Crumb Cake

It's late Spring and that means blueberry time.  I miss my blueberry bushes.  I was once the owner of 4 very large and productive blueberry bushes.  Every summer we would make blueberry syrup, blueberry muffins, blueberry pancakes, and this blueberry crumb cake.  Well that house was sold and along with it, the bushes.  Now I wait patiently for late spring/early summer when the blueberries are at their peak and their prices at the grocery store are at their cheapest.

Blueberry Crumb Cake
-Ina Garten

 Streusel:
1/4 cup granulated sugar

1/3 cup light brown sugar, lightly packed

1 teaspoon ground cinnamon

1/8 teaspoon ground nutmeg

1/4 pound (1 stick) unsalted butter, melted

1 1/3 cups all-purpose flour

cake:

 6 tablespoons unsalted butter, at room temperature (3/4 stick)

3/4 cup granulated sugar

2 extra-large eggs, at room temperature

1 teaspoon pure vanilla extract

1/2 teaspoon grated lemon zest

2/3 cup sour cream

1 1/4 cups all-purpose flour

1 teaspoon baking powder

1/4 teaspoon baking soda

1/2 teaspoon kosher salt

1 cup fresh blueberries

Confectioners' sugar for sprinkling

Directions

Preheat the oven to 350 degrees F. Butter and flour a 9-inch round baking pan.

For the streusel:

Combine the granulated sugar, brown sugar, cinnamon, and nutmeg in a bowl. Stir in the melted butter and then the flour. Mix well and set aside.

For the cake:

Cream the butter and sugar in the bowl of an electric mixer fitted with the paddle attachment on high speed for 4 to 5 minutes, until light. Reduce the speed to low and add the eggs 1 at a time, then add the vanilla, lemon zest, and sour cream. In a separate bowl, sift together the flour, baking powder, baking soda, and salt. With the mixer on low speed, add the flour mixture to the batter until just combined. Fold in the blueberries and stir with a spatula to be sure the batter is completely mixed.
Spoon the batter into the prepared pan and spread it out with a knife. With your fingers,
crumble the topping evenly over the batter. Bake for 40 to 50 minutes, until a cake tester comes out clean. Cool completely and serve sprinkled with confectioners' sugar.