01 - In a medium bowl, combine rolled oats, milk, Greek yogurt, chia seeds, maple syrup or honey, orange zest, vanilla extract, and a pinch of salt. Stir thoroughly until well incorporated. Cover the bowl and refrigerate overnight, or for a minimum of 6 hours, allowing the mixture to thicken.
02 - In a small saucepan, combine cranberries, orange juice, maple syrup or honey, and ground cinnamon. Bring the mixture to a gentle simmer over medium heat. Cook for 8–10 minutes, stirring periodically, until the cranberries have burst and the compote has thickened. Remove from heat and allow it to cool completely. Refrigerate until needed.
03 - To construct the parfaits, artfully layer the chilled overnight oats mixture, the cooled cranberry compote, and the orange segments into individual glasses or jars. Repeat the layering process as desired to create visually appealing strata.
04 - Crown each parfait with a portion of granola, a dollop of additional Greek yogurt, and a few fresh mint leaves, if using. Serve the parfaits chilled.