Want a more hands-off and easy clean up style of making tostones? Baking them at a high heat yields big batches quickly!
After 10 minutes, take the trays out, flip each plantain slice, and then using the flat bottom of a cup, gently press down on each slice to create the the traditional tostone shape. If you find the bottom of the cup is sticking to the tostones while you're trying to remove it, let it sit on them for an extra two seconds. The steam from the hot tostone will help release the bottom of the cup, you just gotta give it a sec!
Place the trays back in the oven for 5-10 additional minutes (depending on how thickly sliced the plantains were), or until browned.