This is not the time of year for holding back. If I’m making a batch of cookies, I’m going to double it so I have enough to send to Mom, take to a weekend potluck, and still have some leftover for my own cookie cravings. If you’re of the same mind, check out these handy tips for doubling our favorite recipes.• Cakes, Muffins, and Other Quick Breads: These baked goods are the main offenders when it comes to unsuccessful doubling.