To begin, start a pot of salted water for your pasta.
Place 1 ½ cup of fresh or frozen peas in a metal strainer or sieve. When your water begins to boil, place the strainer of peas in the water and cook for one minute.
Remove them from the pot and run under cold water to stop cooking.
Place the peas in your blender.
Pour in the pasta into the pot and begin cooking according to package directions.
I used pipe rigate, but you can use shells, orecchiette, or something similar.
To the blender, add in the water water, the juice of half a lemon, salt & pepper, and parsley. Blend these together until smooth.
When your pasta is nearly done cooking, toss in another cup of peas and cook those with the pasta during the last minute of cooking.
Drain the pasta and peas and run them under cold water to cool.
Place the pasta & peas in a serving bowl.
Add in the pea sauce and stir to combine.
Fold in some crumbled feta cheese and top with a bit of fresh parsley for garnish.