The Hungry Girl Sheet-Pan Cookbook: One-Pan Wonders Under 400 Calories is a hardcover cookbook by Lisa Lillien, founder of the Hungry Girl brand and a #1 New York Times bestselling author. Published April 2025 by St. Martin's Griffin (Macmillan), the book contains 160 pages of recipes designed around a single baking sheet, making healthy eating easy and convenient.

The cookbook is organized into breakfast, lunch, dinner, snacks, sides, and desserts. Breakfast offerings include protein-packed "Flattatas" and make-ahead pancake bars. Dinner and lunch options feature meatloaves, chicken entrées, and low-carb pizzas. Savory snack and side recipes include bell pepper nachos, pepperoni pizza bites, and roasted vegetables. Desserts include frozen yogurt bark, brownie crisps, and sheet pan apple pie — all under 400 calories per serving. The book also includes bonus content covering sheet pan basics, time-saving tips, shopping tricks, and ideas for leftovers.

All recipes emphasize wholesome ingredients like fresh produce and lean proteins. The collection features 5-ingredient recipes, 30-minute meals, vegetarian recipes, and many gluten-free options throughout.