INGREDIENTS
1 cup
chilled salted butter
2 3/4 cups
all purpose flour
1/2 cup
old fashioned oats (ground)
1 tbsp
baking powder
1/3 cup
sugar
1/8 tsp
salt
1/2 tsp
cinnamon
1/2 tsp
ginger
1/4 tsp
allspice
1/2 cup
heavy cream
1/3 cup
molasses
1
egg
2 1/2 cups
powdered sugar
3 tbsp
heavy cream
1/2 tsp
vanilla extract
water by the teaspoon as needed