Pressed for time to cook in a busy week? 'Cook Once, Eat Twice' is all about delicious convenience, showing how to get ahead in the kitchen by cooking more efficiently and economically. Nadiya shares a host of creative timesavers, including trusty batch-cooking and meal-prepping ideas, clever ways to spin leftovers into new meals, simple baked treats that are easy to store and eat later, and even recipes to use up your scraps.