What do you call the things put on buttom of cupcakes?

There are a few different things you might be thinking of! Here are some possibilities:

* Cupcake liners: These are the paper or foil cups that hold the cupcake batter and help them bake evenly.

* Frosting: This is the sweet topping that goes on top of the cupcake.

* Sprinkles: These are small, colorful decorations that are often sprinkled on top of the frosting.

* A base layer: Some cupcakes have a layer of something like cookie crumbs or cake crumbs at the bottom for added texture or flavor.

* A filling: Some cupcakes have a layer of filling in the middle, like jam or chocolate ganache.

To give you a more precise answer, could you please tell me what you're picturing?