Bring a few cups of water to a boil and add pinch of salt. Add pasta and cook until al dente. Save around a 1/4 cup of pasta water for later use

Clean and devein shrimp. Season with salt and pepper

Add skillet to medium high flame and allow to get hot. Add oil, once oil is hot, add onion and saute until translucent. Move onion to the side and add shrimp. Pan fry shrimp around 2 minutes per side

Add garlic and spinach saute together for around 5 minutes

Add heavy cream and butter. Lower flame, once butter as melted, gradually add cheese and mix in.

Add seasonings and pasta, along with pasta water. Mix everything together. Taste and adjust seasonings as needed