Cook penne pasta until al dente, then drain.
Blanch spinach for 1-2 minutes, drain, and squeeze excess liquid.
Sear meatballs in olive oil for 8-10 minutes, set aside.
In the same pan, add balsamic vinegar and crushed red pepper; stir for 1-2 minutes.
Add blanched spinach and canned ingredients (e.g., tomatoes or beans); heat through.
Return meatballs to the pan, and combine with other ingredients.
Add cooked penne pasta, and toss to coat. Season with salt and pepper if desired.
Serve in a bowl or on individual plates, topped with ricotta cheese and Parmesan.