INGREDIENTS
3/4 cup
unsalted butter, softened
1 1/4 cups
granulated sugar, divided
1
egg
1 tbsp
vanilla extract
1/2 tsp
baking soda
1/2 tsp
cream of tartar
1/2 tsp
salt
2 cups
all-purpose flour
1 tsp
cinnamon
4 tbsp
unsalted butter, softened
2 cups
powdered sugar
1/4 tsp
salt
3 tbsp
eggnog
Cinnamon, for garnish