There are several synonyms for the phrase "free dessert" that you can use to spice up your culinary vocabulary. These include complimentary sweets, gratis treats, costless confections, on-the-house puddings or cakes, and more. You can also use idiomatic expressions such as "dessert's on us," "sugar freebie," or "dessert giveaway." These phrases are handy when you want to entice your guests to indulge in some delectable treats without worrying about the price tag. Whether you're dining in a fancy restaurant or hosting a dinner party at home, using creative synonyms will make your dessert offerings stand out and leave your guests feeling all the sweeter.