As requested on the main 5:2 thread, my refried beans recipe.
1 medium onion, chopped
2-3 cloves garlic, pressed or finely chopped
500g dried pinto beans
Put everything into a good size pot (should be < half full before adding water). Add water to cover the beans. Boil for ~90 minutes, adding hot water as necessary.
Drain, reserving liquid.
Heat 2tbsp olive oil in a large pan, then add beans. Fry for ~10 minutes, mixing gently.
Put beans in blender and add ~1.5 cups of the reserved liquid. (Alternatively add some of the liquid to the pan and use a stick blender.) Blend in short blasts until you get the texture you want. Might need to add a bit more of the reserved cooking liquid. If you like it spicy, add some chilli powder and/or cumin to the mix.
For me, this makes 12 portions at 95kcal each (26g carbs, 2g fat, 8g protein). I freeze 2 portions together in containers or small freezer bags. I like to mix it with 100g brown rice (139kcal) and do a big salad bowl with the rice & bean mix and homemade fresh salsa on top. If you add a hard boiled egg (77kcal), you come up with a pretty decent vegetarian ~500kcal dinner, otherwise it's vegan and you might want to double the bean serving to get your protein up.