Here to help is Nadiya Hussain with her latest cookbook, Cook Once, Eat Twice. Packed with brilliant recipes, this cookbook covers everything from versatile staples and leftovers with a twist, to freezer-friendly bakes – plus a bonus chapter of unique condiments and dishes to make with food waste, scraps and peelings. We’ve rounded up 10 of our favourite batch-cooking and leftover recipes to give you a preview of what’s inside.