Preheat oven to 350 and line cupcake pan with the liners

Using a hand mixer, beat together the cake mix, butter, milk, and vanilla and mix until combined

Take a medium ice cream scoop and, scoop the batter into the cupcake liners and fill about 3/4 of the way full

Bake in the oven for about 21 minutes

Pull cupcakes out and place on the side to cool

Frosting Directions

In a standing mixer, combine the butter, powder sugar, vanilla, and the heavy whipping cream.

Mix on medium speed until stiff and creamy.

If you still see powdery pebbles, add in 2 more tbsp heavy whipping cream.

Continue to mix until stiff and creamy

Scoop frosting into the piping bag fitting with the number 3 tip

Using your tip with the frosting, pipe squiggles all over the top of the cupcake

Sprinkle the Christmas sprinkles and M&M's all over the top

Top with 4 mini marshmallows