Ingredients:

12 ounces linguine pasta
1/4 cup butter
2 tablespoons extra-virgin olive oil
1 onion, diced
2 cloves garlic, minced
1 red bell pepper, diced
1/2 frozen spinach, drained
1 pound medium shrimp, peeled and deveined
1 (15 ounce) jar Alfredo sauce
1/2 cup grated Romano cheese
1/2 cup cream
1 teaspoon cayenne pepper, or to taste
Salt and pepper to taste
1/4 cup chopped parsley

Directions:

1. Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or until al dente; drain.
2. Meanwhile, melt butter together with the olive oil in a saucepan over medium heat. Stir in onion, and cook until softened and translucent, about 2 minutes. Stir in garlic and red pepper; cook over medium-high heat until soft, about 2 minutes more.
3. Stir in the spinach and shrimp, and cook until firm and pink, then pour in Alfredo sauce, Romano cheese, and cream; bring to a simmer stirring constantly until thickened, about 5 minutes. Season with cayenne, salt, and pepper to taste. Stir drained pasta into the sauce, and serve sprinkled with chopped parsley.

(adapted from http://mobile.allrecipes.com/Recipe/Peppered-Shrimp-Alfredo/Detail.aspx)