Step 1

In a large skillet over medium heat, sauté onion in olive oil until soft for about 5 minutes. Add peas and sauté another 2-3 minutes.

Step 2

Add 4 cups water to skillet and bring to a boil.

Step 3

Add pasta and salt and cook, stirring often for 6-8 minutes or until pasta is al dente (you want a bit of a bite to it). Pasta varieties, sizes, and quality can vary greatly so the best way to check for doneness is by simply trying it every minute after about 5 minutes. Do not overcook!The water and starch from the pasta should thicken together to form a thin sauce that coats the pasta nicely.

Step 4

Season with pepper to taste. Remove from heat and add shredded parmigiano reggiano. Stir until thickened. Add more salt and pepper if needed, to taste before serving. Garnish with more cheese on top (optional).