Cook the pasta according to the package directions.
Drain and return to the cooking pot.
Add the remaining ingredients, adding the optional butter if a smoother sauce is desired.
Gently stir to combine the ingredients and melt the cheeses. Serve immediately.
12 - 16 oz (350 - 450 g) dried rigatoni, penne, rotelle, or pasta of choice
1/2 cup (125 ml) crumbled bleu cheese
2 Tbs (30 ml) freshly grated Parmesan cheese
2 Tbs (30 ml) butter (optional)
Freshly ground black pepper