Using a hand mixer, combine the 12 oz of thawed whipped topping, strawberry yogurts, and vanilla pudding powder. Return to fridge for at least an hour before serving.
While the pudding mixture is setting, wash and slice the strawberries, then gently fold them into the pudding mixture.
Add miniature marshmallows and stir to combine.
If you feel more whipped topping is needed, you may add more at this step to get the consistency and flavor you prefer.