In a medium bowl, stir together the Greek yogurt, honey, and vanilla extract until smooth and evenly combined. Taste and adjust sweetness if desired.
In a separate bowl, gently combine all the berries. Use a fork to lightly mash about one-third of the berries to release their natural juices, leaving the rest whole for texture.
Spoon 2-3 tablespoons of the sweetened yogurt into the bottom of each serving glass or mason jar, creating an even layer.
Add a layer of mixed berries over the yogurt, using about 2-3 tablespoons per glass. Gently press down to create contact with the yogurt.
Repeat the layering process with another yogurt layer, then berries, until glasses are nearly full, ending with a yogurt layer on top.
Just before serving, top each parfait with a generous layer of granola for crunch. Drizzle with additional honey if desired.
Garnish with fresh mint leaves and a few reserved whole berries for an elegant presentation. Serve immediately while granola is crisp.
