Crawfish Pasta

Our cajun fest continues!  This is one of my mom's recipes and was always a favorite.

1 lb egg noodles (cooked according to package directions) - reserve 1 cup cooking liquid
1 stick butter
1 lb shelled crawfish tails (use Louisiana please!) - shrimp can be subbed
1 yellow onion, chopped
1-2 green bell peppers, chopped
2-3 stalks celery, chipped
1 bunch green onion, thinly sliced
1/4 cup chopped flat leaf italian parsley
1 cup half and half
Melt butter.  Saute onion, pepper and celery until softened ~7 minutes.  Add crawfish and simmer over medium heat for 10 minutes.  Add half and half and simmer until slightly thickened ~ 5 minutes.  Add parsley, green onion and pasta.  Season generously with salt and pepper.  Add additional pasta water to loosen if necessary.