1

Heat a large deep skillet over medium-high heat. Add oil and heat until hot, but not smoking. Cook chicken until golden brown on all sides, about 5 minutes. Add onion and sauté until softened, about 3 more minutes.

2

Stir tomatoes (undrained), sugar and spaghetti sauce mix into skillet with chicken and onions. Bring mixture to a boil, cover and reduce heat. Gently simmer until chicken is done, about 30 minutes. Serve warm.