Home Slickdeals Amazon – Duncan Hines Perfect Size for 1 Breakfast Muffin and Cake... Slickdeals Amazon – Duncan Hines Perfect Size for 1 Breakfast Muffin and Cake Mix, Cinnamon Coffee Cake – $0.25 By ARCOM - 17 March 2018 241 0 SHARE Facebook Twitter Go to the deal page: Amazon – Duncan Hines Perfect Size for 1 Breakfast Muffin and Cake Mix, Cinnamon Coffee Cake – $0.25