1. Prepare the Lime Yogurt Base: In a medium-sized mixing bowl, combine the plain non-fat Greek yogurt, fresh lime juice, lime zest, powdered erythritol (or your chosen sweetener), and vanilla extract. Whisk these ingredients together until they are thoroughly combined and smooth. Taste and adjust the sweetness or lime tang to your preference.

2. Drain the Cherries: Open your can of tart cherries and pour them into a fine-mesh colander. Allow them to drain completely for a few minutes to remove excess liquid. This prevents the parfait from becoming watery.

3. Crush the Topping: Place your graham crackers or vanilla wafers into a zip-top bag and crush them using a rolling pin or the bottom of a sturdy glass until you have fine crumbs. Alternatively, pulse them briefly in a food processor.

4. Layer the Parfaits: Grab two clear glasses, jars, or small bowls. Start by spooning about one-quarter of the crushed graham cracker crumbs into the bottom of each serving vessel. This creates your “crust” layer.

5. Add Yogurt and Cherries: Spoon half of the lime yogurt mixture over the cracker crumbs in each glass. Then, gently spoon half of the drained tart cherries over the yogurt layer in each glass.

6. Repeat Layers: Add another layer of the remaining crushed graham cracker crumbs, followed by the rest of the lime yogurt mixture, and finally, top with the remaining drained cherries.

7. Chill and Serve: For the best flavor and texture, cover the parfaits and refrigerate for at least 15 minutes. This allows the flavors to meld and the yogurt to set a bit. Serve chilled and enjoy!