Brown a bunch of mushrooms and onion together; brown some ground beef separately. Drain each. Boil some grain at the same time; I used quinoa, but rice would have been better. Also boil some raisins and cashews in bourbon.
Combine all the above along with some tomato paste, smoked paprika, cumin, salt, and pepper. Stuff it all in the peppers, and bake 'em for half an hour.
I've been eating the results for 3 meals in a row, now, and I'm not tired of it yet.