Preheat oven to 325 degrees.
In a large mixing bowl, combine cake mix, pudding mix, eggs, water, and melted butter.
Mix until smooth, but don’t overmix.
Scoop batter directly into oven-safe baking cups, filling about halfway.
Bake until centers spring back lightly and a toothpick comes out with a few moist crumbs (usually 15-18 min)
Let cakes cool completely.
Make buttercream by whipping butter until fluffy, then slowly adding powdered sugar, cream, vanilla, and salt.
Pipe a lower swirl of frosting if using lidded cups.
Dip cake cup down into a bowl of nonpariels for the viral “dot cake” look.
Add lids and tie with twine