Pumpkin Spice Cupcakes

Name: Pumpkin Spice Cupcakes
Prep time: 20 min
Cook time: 18 min
Total time: 38 min
Cuisine: American
Ingredients: 8 oz cake flour ((2 cups), see Note below for substitutes); 1 TBSP baking powder; 1 tsp pumpkin pie spice; 1 tsp ground cinnamon; .5 tsp salt; 4 oz unsalted butter ((1/2 cup), at room temperature); 8.75 oz sugar ((1.25 cups)); 2 large eggs; 8 fl oz milk (1 cup); 8 oz pumpkin puree (1 cup, not pumpkin pie filling); 8 oz cream cheese ((1 package), at room temperature); 2 oz unsalted butter ((1/4 cup), at room temperature); 1 TBSP milk (or water); 2 tsp vanilla extract; 1 lb powdered sugar ((4 cups)); 1 TBSP cinnamon (or nutmeg)