INGREDIENTS
1 2/3 cups
flour
1 tsp
baking powder
1/2 tsp
baking soda
1/2 tsp
salt
1 1/2 tsp
ground cinnamon
1/4 tsp
ground nutmeg
1/4 tsp
ground ginger
1/4 tsp
allspice
1 2/3 cups
quick-cooking oats
3/4 cup
butter (unsalted, softened)
1 cup
brown sugar
1/2 cup
granulated sugar
2/3 cup
canned pumpkin puree
1
large egg yolk
1 tsp
pure vanilla extract
2 sticks
butter (unsalted, softened)
4 1/2 cups
powdered sugar
1/2 tsp
salt
1/4 cup
heavy cream
2 tsp
pure vanilla extract