Saute onion in a large pan with some olive oil over medium heat.
Add the chicken and saute until it's golden, about 5 minutes.
Add the pasta sauce to the chicken and onion.
Add the pasta to the pan and stir to combine.
Add some water to the pasta, cover and cook until the pasta is ready.
Top with cheese and cook for a few minutes so the cheese melts.
Top with basil and enjoy!