In a large bowl, combine the dry pudding mix and Greek yogurt. Stir until well blended.
Fold in the thawed whipped topping until fully incorporated.
Add in the frozen berries and gently fold to evenly distribute throughout the creamy mixture.
Note: For best texture, let frozen berries sit at room temp for 10 minutes before folding in. This allows them to thaw slightly.
Serve salad immediately while berries are still partially frozen, or let chill for a few hours until fully thawed.
Give it a stir right before serving. Top with extra berries and mint if desired.