01 -
Preheat the oven to 350°F (177°C) and line a standard muffin pan with 12 cupcake liners.
02 -
In a large bowl, cream softened butter and granulated sugar with an electric mixer on medium speed for 1 to 2 minutes until light and fluffy.
03 -
Add egg, egg yolk, and vanilla extract. Beat until the mixture turns pale and smooth, about 1 minute.
04 -
Mix in whole milk, sour cream, and canned pumpkin puree until well combined.
05 -
In a separate bowl, whisk together sifted flour, black cocoa powder, pumpkin pie spice, baking powder, baking soda, and salt.
06 -
Add dry ingredients to wet mixture and mix until smooth without overmixing.
07 -
Divide the batter evenly among liners, filling each about three-quarters full. Bake for 17–19 minutes, or until a toothpick inserted into the center comes out clean.
08 -
Let cupcakes cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.
09 -
Spread 1/2 cup canned pumpkin puree onto a plate and blot with paper towels until reduced to 1/4 cup and nearly dry. Set aside.
10 -
In a medium bowl, beat softened butter with an electric mixer on high for 5 to 10 minutes until pale and fluffy.
11 -
Add cold cream cheese and mix until fully combined and smooth.
12 -
Add dried pumpkin puree and pumpkin pie spice to the bowl and blend until uniform.
13 -
Gradually add powdered sugar, one cup at a time, beating until the frosting is smooth, light, and fluffy, about 1 to 2 minutes.
14 -
Once cupcakes are completely cool, spread or pipe frosting onto each cupcake.