Add butter and olive oil to a large pan/skillet. Sauté onion in butter/oil for a couple minutes, and when the onion starts to soften, add garlic and harissa.
Sauté onion and garlic for a minute or two then add the shrimp and salt & pepper, making sure the shrimp are laying flat on their sides. When the bottom of the shrimp turns pink, flip each shrimp over and cook for another 2 minutes, or until fully cooked and no longer gray.
Generously sprinkle fresh herbs over the shrimp and serve! Great in tacos, over rice, or as an appetizer with crusty French bread. Enjoy!
