Cacio e pepe is a rich and flavorful dish that pairs well with simple side dishes. A light salad with a vinaigrette dressing is a great option to balance out the richness of the pasta. Roasted vegetables, such as asparagus or Brussels sprouts, also pair well with cacio e pepe. Additionally, a glass of red wine, such as Chianti or Sangiovese, is the perfect complement to this classic Italian dish.