Roasted Brussels sprouts are a great vitamin-and-mineral-rich vegetarian taco filling. Here we pair them with avocado they make for a delicious addition to the taco-night menu.
In a small bowl, combine onion with lime juice; season with salt. Toast tortillas over a gas flame until lightly charred, or blister under the broiler. Stack on a plate and cover with a clean kitchen towel. Mash avocado; season with salt. Spread tortillas with avocado; top with sprouts, pickled onion, peanuts, and cilantro. Serve with lime wedges.