For a slightly lighter version, you can use reduced-fat graham crackers, light key lime yogurt, and light whipped topping; the texture stays nicely creamy, though it may be a bit softer. If you prefer a stronger lime flavor, increase the lime zest to 2 teaspoons and the lime juice to 2 tablespoons, tasting as you go so it doesn’t become too tart. To add a touch of crunch, sprinkle toasted coconut or finely chopped toasted pecans over the top just before serving. For individual servings, layer the graham crackers and filling in small glass jars or parfait cups; they chill faster and make for easy transport to potlucks. If you can’t find key lime yogurt, use regular lime yogurt and add a little extra zest for brightness. Food safety tips: keep the whipped topping and yogurt refrigerated until you’re ready to mix, and don’t let the finished dessert sit out at room temperature for more than 2 hours (or 1 hour if it’s quite warm) because of the dairy ingredients. Always use clean utensils for spreading and serving, and store leftovers tightly covered in the refrigerator, enjoying them within 3–4 day sor best quality and safety.
Aunt Donna swears this is the fastest way to bring spring vibes to the table—slice it cold and watch it disappear.