All the members of the legume family offer great protein and fiber at a very low cost.  Make a pot of beans ahead of time and keep it in the refrigerator.  You’ll have the basis for an endless variety of healthy meals.  This recipe is for pinto beans, but it will work well for most all legumes.
4 cups pinto beans
2 large leeks or onions, chopped
3-4 cloves garlic
1-2 chipotle peppers
Soak beans overnight.  Or not.  (Soaking simply improves digestibility of beans) Rinse in the morning and put in large cooking pot or crock pot.  Cover beans with water.  Add remaining ingredients and simmer until done, adding water as needed.  One stove, expect 4-6 hours.  In crock pot, expect 10-12 hours.  Make 10 cups.  Keeps well in refrigerator for 4-6 days.