Creating Easy One Pan Italian Chicken In Tomato Sauce is straightforward if you follow these simple steps:

1. Heat the Oil: In a large skillet over medium heat, add the olive oil. Allow it to heat for a minute.
2. Sauté the Onion and Garlic: Add the chopped onion and minced garlic to the skillet. Sauté for about 3-4 minutes until the onion becomes translucent.
3. Add the Chicken Breasts: Season the chicken breasts with salt and pepper, then place them in the skillet. Brown the chicken on both sides for about 5 minutes.
4. Pour in the Tomatoes: Once the chicken is browned, pour the crushed tomatoes over the chicken. Add the dried Italian seasoning and sugar if using.
5. Simmer: Bring the mixture to a gentle boil. Reduce the heat to low, cover the skillet, and let it simmer for 20 minutes. This allows the chicken to cook through fully and soak up the flavors.
6. Add Cheese: After 20 minutes, sprinkle the grated Parmesan cheese over the chicken. Cover again and let it cook for an additional 5 minutes until cheese is melted.
7. Garnish and Serve: Once done, garnish with fresh basil leaves and serve warm.

These steps will guide you with clarity, helping you successfully prepare this captivating dish.