Capn_Crunch_Cinnamon_Crunch_Mid_1970s Published April 21, 2012 at 635 × 432 in 70s Spots: Cap’n Crunch’s Cinnamon Crunch cereal Jean LaFoot brings you Cinnamon Crunch cereal – mid-70s. ‘How did such a bad guy guy come up with such a good cereal?’