You start by making Tostones, the classic way:
Heat 3/4 cup of vegetable oil in a pan.
Peel one plantain and slice rounds that are about 1/2 inch thick (one plantain makes about 6 sandwiches).
Fry until they are golden and crisp...remove from pan and drain on a paper-towel lined plate.
Using a "tostonera", or some sort of a press, press all the fried plantains.
I like to make a little mix of warm water, sea salt and crushed garlic to dip the pressed plantains in, before frying them again. This infuses them with flavor and makes them extra crispy.
Fry the plantains again until they are nice and crispy.
Once you remove them all, and they have drained...start building your little sandwiches. I put baby greens, sliced cherry tomatoes and shredded co-jack cheese on mine. If you want to be ultra-Caribbean, you can mix equal parts mayonnaise and ketchup to dip them in! I like to eat them as they are.