Heat large skillet over medium-high heat and stir in ground beef. Cook until no longer pink. Drain any excess oil, and set beef aside.
Heat olive oil in a large pot over medium heat. Stir in onion and garlic and stir until onion is soft and translucent.
Add chili powder and cumin, stir and let cook 1 minute.
Stir in tomatoes, beans, bell pepper, mushrooms, oregano, thyme and salt & pepper.
Simmer until peppers are tender, about 20 minutes. Stir in quinoa, beef and corn then return to a simmer.
Cook until corn is heated through.
Portion out kids’ servings then add hot peppers. Simmer 10 minutes more.
Serve with optional toppings.