INGREDIENTS
2 cups
all-purpose flour, plus more for the pan (250g)
5 1/2 tbsp
unsalted butter (75g)
1/2 cup
granulated sugar (100g)
1
large egg, at room temperature
1/4 cup
sour cream, at room temperature (60g)
2/3 cup
milk, at room temperature (160g)
1 tbsp
vanilla extract (15g)
1 tbsp
baking powder (12g)
kosher salt
2 1/4 cups
all-purpose flour (280g)
1 1/4 cups
packed light brown sugar (290g)
1 tbsp
ground cinnamon (6g)
1/2 lb
unsalted butter, melted (226g)
powdered sugar, for dusting