Cook ground beef in large nonstick skillet over medium-high heat, stirring occasionally, until done.
Stir in sauce and chili powder. Bring to a boil over high heat. Reduce heat to low and simmer covered 10 minutes.
Stir in macaroni and heat through. Serve, if desired, with sour cream and shredded Cheddar cheese.
Tip: Make it your own with your favorite chili toppings.
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