Adapted from Alton Brown
For the cake-
2 cups of cake flour
1 teaspoon baking powder
1/2 teaspoon salt
1/4 teaspoon nutmeg
4 tablespoons (2 ounces) of unsalted butter, room temperature
3/4 cup sugar
1 large egg
1/2 cup milk- I've used whole and 2%, both with good results
3 cups of fresh blueberries
For the topping-
1/2 cup sugar
1/3 cup cake flour
1/2 teaspoon cinnamon
4 tablespoons butter, chilled- 2 ounces
Preheat the oven to 375 degrees. Spray a 9x9 inch glass baking dish with cooking spray.
In a medium bowl whisk together the flour, salt, baking powder and ground nutmeg. Set aside.
In a large bowl, beat the softened butter and the sugar together until creamy and fluffy. Add the egg and beat well. Add 1/3 of the flour mixture and 1/3 of the milk, and beat until incorporated. Repeat until the ingredients are combined. Gently stir in the blueberries and pour cake mixture into the prepared pan.
For the topping:
In a small bowl combine the sugar, flour and cinnamon. Add the cold butter in chunks, and mix with a fork or pastry blender until there is a crumb-like mixture. Sprinkle the sugar mixture over the cake. Bake on the middle rack of the oven for about 35 minutes, or until golden. I tested with a tooth pick and my cake took about 45 minutes. Cool 10 minutes before serving. It's delicious warm or cold. Give it a try!