One morning earlier this month, I woke up to freezing weather and feeling under the weather. It was the perfect day to stay cozy in pajamas—and in that moment, I felt so grateful for the couple of hours I’d spent the day before focused on my weekly meal prep. Our fridge was stocked with the building blocks of some delicious meals: a comforting chicken and rice soup, fresh greens and chopped veggies, creamy hummus, and a batch of morning glory muffins just waiting to be slathered with butter....