It's relatively simple to make a larger batch of brown rice or whip up a sheet pan recipe, loaded with protein and veggies. Even roasting some vegetables together in the oven can help you have sides prepared for a few meals throughout the week, Sasha said. Just remember that cook times vary — you can roast root vegetables (think: potatoes, carrots, beets) in one batch, and softer vegetables (like courgette, squash, bell pepper, and green beans) in another.