Question: What happens when you cross Stir Crazy Asian Grill with FlatTop Grill? Answer: You go Flat Out Crazy. Walnut Group-backed Stir Crazy Asian Grill has combined with local self-serve stir-fry restaurant FlatTop Grill to take advantage of the increased popularity in Asian cuisine and the appeal of each restaurant to different consumer groups. FlatTop has more appeal to younger customers while Stir Crazy attracts more families. Each restaurant will retain its name and menus. The Walnut Group purchased Stir Crazy in 2006.