Preheat the oven to 350
1 large purple onion, chopped
1 lb of tomatillos, paper removed/washed/chopped
Peppers, chopped (all the peppers and heat you can handle or want)
Combine them in a bowl and add about a 1/2 cup of olive oil, stir
Let it cool before you add it to the food processor.
Chop it to your preferred texture. If you're going to serve it as a salsa, go small. If you're going to add it to rice or quinoa, keep it chunky.