Preheat the oven to 350°F (180°C).
Spread the walnuts in a single layer on a baking sheet.
Toast the walnuts for 7–8 minutes or until fragrant and lightly golden.
Transfer the toasted walnuts to a bowl.
Add the honey and gently stir until the walnuts are evenly coated.
Allow the mixture to cool for 1–2 minutes.
In a separate bowl, combine the Greek yogurt and vanilla extract.
Stir until smooth and creamy.
Divide the yogurt mixture among 6–7 serving bowls.
Spoon the honey-coated walnuts over each serving.
Sprinkle generously with cinnamon powder.
Serve immediately or refrigerate until ready to enjoy this delicious Greek Yogurt with Honey and Walnuts dessert.