Directly over the flame on the stove, roast the bell peppers until the skin in charred and black all over.
Immediately place in a bowl and tightly cover with plastic wrap. Leave to rest for 10 minutes. The peppers will sweat, making it easy to remove the skin.
Remove the skin, stems and seeds.
Place the peppers, garlic, Parmesan cheese, basil leaves, salt an red pepper flakes in a food processor.
Blend well in the food processor until everything is well combined..
With the food processor running, slowly add olive oil and process for a few minutes, until well combined and creamy consistency.
Video
Notes
You can use all red peppers or different colored peppers as you desire. 1 tablespoon of pine nuts. almonds or pistachios can also be added.