Directions

1. Preheat oven to 350F (175C).
2. In a large skillet, cook ground beef over medium heat until browned; drain excess fat.
3. Add onion and garlic; cook until softened.
4. Stir in diced tomatoes, green chilies, chili powder, cumin, salt, and pepper; simmer for 10 minutes.
5. Meanwhile, cook macaroni according to package directions until al dente; drain and set aside.
6. In a small saucepan, melt butter over medium heat, whisk in flour until smooth, and gradually add beef broth to make a roux-based sauce; heat until thickened.
7. Combine cooked macaroni, chili meat mixture, and sauce; stir to blend.