In a large saucepan or a heavy bottomed pot, add olive oil and set stove to medium heat.
Saute peppers, onions, garlic, and mushrooms for 3 minutes.
Add turkey, salt, pepper, and oregano and continue cooking for another 5 minutes.
Add tomatoes, tomato paste, and red wine and bring to a boil. Immediately reduce to a simmer and cook for 5 more minutes.
Notes
Most cacciatores involve braising meat in the sauce, but since this uses turkey leftovers, the meal comes together quickly with only the need to warm the meat. If you are serving it over pasta or rice, be sure to have that ready beforehand.