Preheat oven to 375 degrees F.
Blind bake pie crust in a 9" springform pan. Place it on a baking sheet to catch leaks or drips.
In a small bowl, break up any large pieces of crab meat.
Add cheese, green onions and parsley and mix well.
In a large bowl beat eggs, milk, cream, lemon juice, sherry and seasonings until well blended.
Spread crab mixture over the bottom of pie dish. Pour egg mixture over crab.
Place baking sheet in the center of the oven and bake at 375 degrees F. for 55 minutes, rotating baking sheet half way through.
Bake until deep golden brown on the top. Edges will be set and center should be just slightly jiggly. The quiche will continue to set up as it cools.
Cool completely to room temperature. Serve room temperature or slightly warm. If not serving right away, wrap it well and refrigerate.