Preheat oven to 350°F. Line a cupcake pan with paper liners.
Combine the flour, Lucky Charms crumbs, baking powder, and salt in a small bowl. Set aside.
3/4 cups all purpose flour, 1/2 cup Lucky Charms cereal crumbs, 1 1/4 teaspoons baking powder, 1/4 teaspoon salt
In the bowl of an electric stand mixer fitted with a paddle, add the sugar and butter. Beat until light and fluffy, about 3 to 5 minutes.
1/2 cup granulated sugar, 1/4 cup unsalted butter
Mix in the eggs one at a time, then the vanilla extract.
2 eggs, 1 teaspoon vanilla extract
Gradually alternate adding the flour mixture and heavy cream until everything is just combined.
1/2 cup heavy cream
Fill each cupcake liner about half way full. This is about 2 tablespoons of batter per cupcake.
Bake for 15-18 minutes, or until a toothpick inserted into the center comes out clean. Remove from the pan and allow to fully cool.