Add the cream and bring to a slow simmer, stir often. DO not let boil!
Stir in the parmesan cheese and continue to simmer for 10-15 minutes until the sauce has thickened, stirring often.
Season with fresh ground pepper.
While sauce is simmering prepare pasta and shrimp.
Cook the pasta in large pot of salted water until tender but still firm (al dente).
How to prepare pan-seared shrimp
I cooked my shrimp and served with shells on (remove before eating). If you prefer remove the shell prior to frying.
Pat the shrimp dry with paper towel, then season with salt and pepper.
Heat olive oil and 2 tablespoons of butter in a large skillet, medium high heat.
Add the garlic cloves.
Next add the shrimp and fry the shrimp until it turns pink and opaque and has a golden-brown sear. This takes about 2-3 minutes per side.
Cook the shrimp in batches to avoid overcrowding the frying pan. Keep cooked shrimp in warmed oven while preparing all the shrimp. Add more olive oil and butter as needed.
Putting it all together
In a large bowl toss the pasta and Alfredo sauce until all the pasta is coated with sauce.
Portion the pasta on plates and top with the seared shrimp. Garnish with parmesan shaving and fresh ground pepper.