3 cups powdered sugar
3 tbsp. sour cream or plain greek yogurt
2 tbsp. cream cheese, softened
4 tbsp. butter, softened
2 tsp. pumpkin pie spice
1/2 tsp. salt
1/4 tsp. cream of tartar
1/4 tsp. baking soda
4 cups flour
2 eggs
1 tsp. vanilla
2/3 cup powdered sugar
1 cup sugar
1/2 cup canned pumpkin puree (NOT pumpkin pie filling)
1 cup butter, softened