Preheat your oven to 325F.
In a heavy saucepan, heat butter over medium heat. Add onions, celery, bell peppers, and garlic, cooking until soft.
Stir in the crayfish tails and saute for 3 minutes until the aroma releases.
Add flour and cook until bubbling.
Add cream, wine, & lemon juice. Boil until mixture is reduced by 1/2.
Combine half of the cheese, stirring the mixture constantly. Then, season with salt and pepper to taste.
Lightly oil baking dish. Place the crayfish mix in the dish.
Add the remaining grated cheese on top, and then squeeze on three or four lemon wedges.
Sprinkle the green onions and parsley.
Bake for about 15 to 20 minutes.
Serving Suggestions: Serve with lemon wedges for garnishing.