This is basically this recipe from the PPK, but with a few substitutions/additions:
- I had cooked cannellini beans, so I used those instead of pinto beans
- I subbed mashed beans and almond meal for the breadcrumbs in the filling
- I used mushroom broth and mushroom-flavored olive oil to boost the mushroomy-ness
- I served it with this gravy
I got rave reviews from everyone who's tried it, and it's packed full of tasty protein.