Heat a waffle iron or panini press to medium heat. Lay the bacon on the waffle iron or panini press and close lid. Cook for 2 1/2 minutes. Move the bacon pieces so the unseared areas now come in direct contact with the metal. Close the lid and cook for another 2 1/2 to 5 minutes, depending on desired crispness. Transfer the bacon to a paper towel-lined plate. Reserve rendered fat for another use. Depending on bacon, you will have 1 to 3 tablespoons of fat.