If you are able to cook these with lard, they’re even better. You can add a chopped chili if you like it spicy.
bacon grease from 6 fatty slices of bacon
350 g cooked pinto beans
½ chopped onion
salt and pepper
Heat grease in pan. Add onion and sauté until softened. Add beans. If using homemade beans, add bean cooking liquid. If using canned beans, add a splash of water. Season with salt and pepper. Boil until liquid reduces and beans start to fall apart. Mash with a potato masher to a smooth consistency.
Great with chilaquiles.