Heat olive oil in large pan then saute onion till it starts to turn golden. Meanwhile make pasta.
Add white wine n cook on low for 5 minutes add crab once pulled apart into small chunks. Then add chicken broth and parsley n salt n pepper (mayb 1/4 tsp. red pepper flakes for heat) Let simmer for 5 more minutes.
Drain pasta n put in large bowl n top with crab mixture n toss in parmesan cheese....ENJOY :)