Generally, the sweeter the bean, the easier it is to digest. I've always found canned beans easier to digest than those I've cooked from dried. Start with smaller quantities e.g. in soups, and experiment with dishes that combine both meat and beans (e.g. chilli con carne; cassoulet; chicken casserole & chickpeas - you can do this with any meat casserole dish - just add in some beans) BUT if you're doing this for the planet, bear in mind that it's not meat per se that's the problem, it's the INTENSIVE rearing of animals that is doing the damage - too many animals; too many antibiotics (needed because they're reared in such intensive spaces); slurry (fouling water courses); methane. We've switched to higher welfare, higher price meat and just eat less of it (and have 4 meat-free days every week when we have beans, lentils, tofu, quorn, etc. We're experimenting with dishes. Last night it was roasted vegetables with feta cheese melted over the top; this morning for breakfast, instead of bacon we had fried slices of halloumi - delicious. It doesn't have to be beans ...