20 Easy Leftover Croissant Recipes provide delicious answers to what to do with extra croissants. These recipes with leftover croissants include both savory and sweet options for breakfast, dinner, and dessert. Wondering what to make with extra croissants? Explore creative recipes made with croissants, including recipes using already made croissants or recipes using store-bought croissants, to turn your leftovers into tasty meals or treats!