Step 1

Preheat the oven to 350°F and lightly coat a 9 x 13-inch baking dish with cooking spray.

Step 2

Bring a large pot of water to a boil, add the macaroni, and cook until al dente. Drain and reserve.

Step 3

In a large skillet, heat the olive oil over medium heat. Add the onion and pepper and sauté until soft. Add the ground beef and cook, stirring to break up the meat, until the meat turns brown and is no longer pink. Drain any remaining grease. Place the skillet back on the heat and add the beans, tomatoes, and chiles. Cook, stirring, for 5 minutes.

Step 4

Combine the tomato-bean mixture with the beef and pour into the baking dish. Top with the cheese and bake for 10 minutes. Serve, garnished with fresh parsley, if desired.