In a bowl, beat whip topping, nougat powder, and chocolate pudding mix on high speed until very stiff, about three to four minutes.

Fit a piping bag with a star tip and fill the bag with the mousse mixture.

Line up the dessert cups on your kitchen table (as opposed to the counter, which is higher up; it’s easier to pipe neatly from above when your work surface is a little lower).

Working with one cup at a time, place your piping bag directly in the center of the bottom of the cup and start piping a swirl, raising the piping bag as the swirl fills the cup. Keep going until the cup is filled to 1 inch from the top. Don’t worry about making perfectly even swirls.

Fill that last inch with your favorite toppings, using a few at a time for a busier and prettier look.