Place onions and mushrooms into a large pot with a drizzle of olive oil. Saute on medium for 5 or so minutes until onions become translucent.
Add chicken thighs, turning occasionally until browned.
Add pancetta and garlic and saute for 2-3 minutes then add all remaining ingredients.
Simmer on low without a lid, stirring every now and then, for 1 hour.
You might like to cook your cacciatore longer, and that's absolutely fine! The longer the better :)
Season with salt and pepper to taste then serve with pasta, polenta, rice or veggies.
