Heat olive oil and butter in a large skillet over medium-high heat. Once the oil is super hot and the butter has melted, add the shrimp and a generous sprinkle of salt & pepper, sauté for 1 minute.
Remove shrimp from pan and set aside. Then add the garlic, tomatoes, and spinach to the same pan. Sauté for 1 minute or until the garlic is fragrant.
Stir in the heavy cream, Parmesan cheese, and basil. Reduce heat to medium and simmer until sauce is slightly reduced, about 2-3 minutes.
Return the shrimp to the pan and stir to combine. Taste and adjust salt if needed.
