INGREDIENTS
1/2 cup
unsalted butter, room temperature
1 tbsp
lemon juice
1 cup
sugar
1
egg,
1 tsp
vanilla
2 cups
flour (set aside ¼ cup of this to toss with the blueberries)
2 tsp
baking powder
1 tsp
kosher salt
2 cups
fresh blueberries
1/2 cup
milk or buttermilk
Topping
1/4 cup
butter
1/2 cup
brown sugar
1/2
flour
1/4 cup
nuts, pecans or walnuts