Make cupcakes according to box directions except use coffee in place of water.
Allow cupcakes to cool
Cut a small hole in the top of each cupcake and remove a chunk from the middle of the cupcake.
Pour a small amount of caramel sauce into the middle of each cupcake.
Place the top of the chunk of cupcake removed back into each hole.
Cream butter and 1 packet of Via in a bowl. I don’t have a mixer so I creamed the butter by hand. First grate butter into a bowl to soften it and mix butter with a wooden spoon.
Slowly add in the powdered sugar and milk as needed until everything is incorporated and the frosting is the right consistency.
Transfer the frosting to a piping bag
Ice each cupcake and drizzle the tops with caramel sauce