INGREDIENTS
1 18.25 ounce package
yellow cake mix
2/3 cup
water
3
eggs
1/2 cup
butter, softened
1 1/3 cups
packed brown sugar
1 tbsp
ground cinnamon, or to taste
1 tbsp
vanilla extract
1 1/2 cups
butter
4 1/2 cups
all-purpose flour
1 tbsp
confectioners' sugar for dusting (optional)