This is my version of a dish I loved from Cafe Mexico in Victoria, BC. Use more peppers if you like. Quantities are approximate, play with them as you like. If you can't grill go skewerless and just throw everything in a roasting pan (mushrooms and onions in the bottom). Cook in a 450F oven stirring every 5 minutes until meat is done and veggies are tender (about 20 - 30 minutes).