Fresh, hearty, high quality food at a reasonable price! Family owned Buttercup Diner prepares scrumptious meals from Debbie's personal recipes, including mouth-watering desserts like upside-down apple-walnut pie, peanut buttercup pie, and bread pudding with whiskey sauce. Check out Buttercup's menu online and treat yourself with this $25 gift certificate good for breakfast, lunch, or dinner at locations in Concord, Oakland, Vallejo, and Walnut Creek.