INGREDIENTS
Topping:
1/2 cup
all-purpose flour (bleached or unbleached will work)
1/2 cup
brown sugar, well packed
1/4 tsp
ground cinnamon
1/8 tsp
freshly ground nutmeg
4 tbsp
unsalted butter, room temperature
Muffins:
2 cups
(spoon and sweep) (225g) all-purpose flour (bleached or unbleached)*
3/4 tsp
baking powder
1/4
+ ⅛ teaspoon baking soda
3/4 tsp
kosher salt
6 tbsp
unsalted butter, room temperature
3/4 cup
sugar
2 tbsp
brown sugar
1
lemon zested
2 tsp
vanilla extract (make your own)
1
whole egg
1
yolk
1/2 cup
plus 2 tablespoons (135g) sour cream or buttermilk**
1 1/2 cups
fresh or frozen blueberries***
1 tbsp
all-purpose flour