Related Clues:

• See 18-Down
• Deli offering
• Snack since 1912
• Black-and-white snack
• Diner sandwich
• Cookie with a creme center
• See 49-Down
• Association
• See 116-Across
• Lunch counter order
• Triple-decker, perhaps
• Chocolate snack
• Hydrox rival
• Neanderthal's weapon
• Popular snack