While water is heating to the boiling point, clean and chop onions. In a small saucepan, over medium heat, gently saute chopped onions in the olive oil. When the onions are soft and transparent, add the can of peas, with the juices, and the crushed or chopped basil, and salt/pepper to taste. Reduce heat to low once the mixture is hot and wait for the pasta to be cooked.
I like my pasta al dente, so it does not take long to cook. Once it is ready, I drain it and then mix it with the peas/onion mixture. I serve it with grated, dairy free Romano cheese, or Parmesan. It is very tasty and very quick and easy...also very low fat content.
(HINT...the first time you make this, you may want to reserve some of the cooking water, about a cup, just in case you find the pasta dry compared to what you are used to. If so, add maybe 1/2 cup of the cooking water to moisten it. For us, its fine as written, but we are used to it.)