Bring a large pot of salted water to a boil. Cook pasta according to package directions until al dente. Reserve ½ cup pasta water, then drain.
12 oz fettuccine or penne pasta, 1/2 tsp salt, 1/2 cup reserved pasta water
Heat butter in a large skillet over medium heat. Add shrimp, season lightly with salt and pepper, and cook for 2–3 minutes per side until pink and opaque. Remove from skillet and set aside.
1 lb raw shrimp, peeled and deveined, 2 tbsp unsalted butter, 1/2 tsp salt, 1/2 tsp black pepper
In the same skillet, add minced garlic and cook for 30 seconds until fragrant. Pour in heavy cream and bring to a gentle simmer.
3 cloves garlic, minced, 1 cup heavy cream
Stir in parmesan cheese, Italian seasoning, salt, and pepper. Let simmer for 2–3 minutes until slightly thickened.
1 cup freshly grated parmesan cheese, 1/2 tsp salt, 1/2 tsp Italian seasoning, 1/2 tsp black pepper
Add cooked pasta and shrimp back into the skillet. Toss until evenly coated. Add reserved pasta water as needed to reach desired sauce consistency.
12 oz fettuccine or penne pasta, 1 lb raw shrimp, peeled and deveined, 1/2 cup reserved pasta water
Remove from heat. Garnish with chopped parsley and extra parmesan cheese. Serve immediately.
1 tbsp fresh parsley, chopped (optional garnish)