Preheat/bake Oven: 350F.
Butter a 2-quart casserole dish. Melt the butter in a skillet. Saute the onion over medium heat until soft. In a small bowl, mix the eggs, sour cream and parsley. Add onions, cheese and ham. Add salt, pepper and cayenne, to taste. Place the noodles in the casserole dish. Add the ham mixture; toss gently. Bake at 350F for 45 minutes until casserole is set.
Serve immediately with a tossed green salad.
Cajun Country -- New Iberia, Louisiana