INGREDIENTS
1
Egg, large
1 tbsp
Baking powder
1 1/4 cups
Brown sugar, packed light
1 tbsp
Cinnamon, ground
4 1/4 cups
Flour
1/2 cup
Granulated sugar
1 pinch
Kosher salt
1
Powdered sugar
1 tbsp
Vanilla extract
5 1/2 tbsp
Butter, unsalted
1/2 lb
Butter, unsalted
2/3 cup
Milk
1/4 cup
Sour cream