Pasta with Caramelized Onion Trio, Arugula, and Mozzarella

A quick weeknight dinner tonight - I made this pasta using whole wheat linguine. The pasta was pretty good, kind of different.

• Pasta with Caramelized Onion Trio, Arugula, and Mozzarella (Cooking Light, April 2005)
• Hearts of Romaine with Caesar Dressing (The Best Recipe, p. 42)
• Sourdough bread with Sauteed Garlic Butter (Fine Cooking #43, March 2001, p. 49)