Shrimp Alfredo question...?

I love going to Joe's Crab Shack and I always order the pasta shrimp alfredo, and I would love to try and re-create the alfredo sauce. Does anyone know the recipe or know where I can find it? Much appreciated :)Shrimp Alfredo question...?
saute your shrimp (pealed and devained) in butter then set aside to mix with in pasta later.

Ingredients

1 pound dried fettucine

6 tablespoons unsalted butter

1 shallot, minced

1 cup heavy cream

1 cup finely grated Parmigiano-Reggiano

1/2 teaspoon salt

1/4 teaspoon freshly ground black pepper

Fresh parsley, for garnish, optional

Directions

Cook the fettucine in a pot of rapidly boiling salted water until al dente. Drain in a colander, reserving 1/4 cup of the pasta cooking liquid.



While the pasta is cooking, melt the butter in a medium saucepan over medium-high heat. Add shallots and saute until tender. Add heavy cream and bring to a boil. Cook until sauce has reduced slightly, about 5 minutes. Remove from the heat.



Return the pasta to the pot it was cooked in, set over medium-high heat along with the reserved cooking liquid. Add the butter-cream mixture and half of the Parmesan and toss to combine thoroughly. Season with salt and pepper, to taste. Sprinkle with remaining Parmesan and garnish with parsley, if desired. Serve immediately.

raclette

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