Preheat the oven to 400 degrees.
In a large sauté pan, heat the olive oil. When the pan is hot, add onions, shallots, peppers, celery, salt and cayenne. Sauté for 5 minutes or until the vegetables are soft and translucent. Add garlic, parsley and green onions, sauté for one or two minutes. Remove from the heat and cool 30 minutes.
In a mixing bowl, combine one cup of the mayonnaise, mustard, vinegar and hot sauce. Add cooled vegetables and mix until thoroughly incorporated. Gently fold in the crabmeat. Spoon the mixture into an 8”x 8”baking dish.
In a separate bowl, combine the breadcrumbs, the remaining 1 /2 cup of mayonnaise, sour cream, lemon juice and the Creole seasoning together. Spread the bread crumb mixture on top of the crab mixture.
Bake 20 minutes, or until bubbly and brown. Garnish with chopped chives.