Bring a large pot of salted water to a boil, cook pasta until just al dente.

Cook bacon in a large skillet until crispy. Crumble then set aside. In same skillet, saute butter and shallots for about 5 minutes on medium heat. Add the radicchio and continue to cook until slightly wilted (aprox. 3-5 minutes). Add the bacon, sauce and heavy cream and bring to a low simmer until sauce is thickened. Taste for seasonings.

Drain cooked pasta; add to the saute pan along with a few good handfuls of grated Parmesan cheese. Toss to coat and serve.