The original recipe for oysters Rockefeller, created at the New Orleans restaurant Antoine's in 1899, remains a secret to this day. The appetizer, oysters topped with a mixture of finely chopped greens and copious amounts of butter and then baked in their shells, was considered so rich that it had to be named after the richest man of the day, John D. Rockefeller. A few years later, no self-respecting restaurateur would be without his own version on the menu. This lighter take features spinach, watercress, green onions and grated Parmesan.