Beans are an important part of a healthy GI diet. Pinto beans have a GI index of 39 which puts them firmly in the low range. All beans and legumes (with the exceptions of refried beans and baked beans) are a good and inexpensive addition to a GI friendly meal plan.
Beans are also very easy to cook, you just have to plan ahead of time. The evening before you want to cook them, put them in a bowl and cover them with water (at least an inch or so over the top of the dried beans, they will expand and they rehydrate). The next morning rinse them very well and add them to your crockpot. These beans were flavored only with a ham bone, salt, and pepper. You can make a vegetarian option by using adobo seasoning, onion, garlic, salt and pepper, and even a little liquid smoke. Let them cook on day on low and then serve. I usually serve them with cheese and either tortillas or corn bread. The agave sweet corn bread recipe was great with these beans!