Creating this delightful No-Bake Blackberry Mousse is easy if you follow these steps:

1. Prepare the Blackberries: Rinse the blackberries under cold water and pat them dry. Reserve a few for garnish.
2. Blend the Blackberries: In a blender or food processor, puree the blackberries until smooth. Pass the puree through a fine mesh sieve to remove the seeds if desired.
3. Whip the Cream: In a mixing bowl, whip the heavy cream until soft peaks form. Be careful not to over-whip.
4. Combine Ingredients: In another bowl, mix the Greek yogurt, powdered sugar, and vanilla extract until well combined.
5. Fold in Blackberry Puree: Gently fold the blackberry puree into the yogurt mixture, ensuring it is evenly incorporated.
6. Add Whipped Cream: Carefully fold in the whipped cream, maintaining the airy texture of the mousse.
7. Transfer to Servings: Spoon the mousse into individual cups or a large dish, smoothing the top.
8. Chill: Cover the cups or dish with plastic wrap and refrigerate for at least 2 hours to allow the mousse to set.
9. Garnish and Serve: Before serving, top with reserved blackberries and a sprinkle of powdered sugar if desired.

By following these easy steps, you’ll make an unforgettable No-Bake Blackberry Mousse!