flapjack
noun /ˈflæpdʒæk/
  /ˈflæpdʒæk/
 - [uncountable, countable] (British English) a thick soft biscuit made from oats, butter, sugar and syrupTopics Foodc2
 - [countable] (North American English) a thick pancake
 
Word Originearly 17th cent. (in sense (2)): from flap (in the dialect sense ‘toss a pancake’) + jack; sense 1 dates from the 1930s and is probably a regional coinage.