What happens when a buttermilk, nutmeg muffin and an apple cider doughnut fall in love? Sugar Crisp muffins are born. We bake up these moist and tender muffins then dunk them entirely in melted butter before rolling them in cinnamon sugar. They make us think of crisp autumn days and the start of the school year, though you can enjoy one any time of year. They’re definitely a treat!