I actually do this with left over white beans, they are wonderful with an omlette.The only time I've EVER eaten beans for breakfast they were red beans (Creole, the only kind) in an omelette – an absolutely heavenly combination.
If you're ever lucky enough to know someone (or someplace) that makes red beans properly —and there are any leftover in the morning— you must give them a go in your omelette.
I like beans, cook them in a Instapot with chicken broth, some ham, a few spices. They get better as leftovers, and great when added to burritos or omelettes.