Bring milk, half and half, and heavy whipping cream to a boil. Add crab meat, fresh parsley, Old Bay Seasoning, butter, salt and pepper. When it starts to boil, make a paste of cornstarch and water to thicken soup.
Dissolve bouillon cube in water. Cook onion in butter until tender; blend in seasonings. Add water, cream and bouillon gradually; Add thickener of choice and cook until thick, stirring constantly. Add crabmeat; heat. Garnish with parsley. Per Serving: 486 Cal (85% from Fat, 13% from Protein, 2% from