How To Add Filling To Cupcakes. In a third bowl, beat. Just use a wilton tip, such as the bismarck.

For looser fillings like caramel sauce, a spoon will suffice. Push the small cake round out of the corer and repeat this process with all the cupcakes. Be sure not to go all the way down to the bottom of the cupcake, this can cause your filling to seep through the liner.