Coat a 9x13 inch baking dish in butter or nonstick cooking spray and set aside.

Melt the butter in a large pot before adding the marshmallows. Stir the marshmallows over medium heat until they are completely melted.

Whisk in the Jell-O powder until it is fully incorporated into the melted marshmallows.

Fold the rice krispie cereal into the marshmallow mixture until it is evenly coated. Once the cereal is coated in the marshmallow mixture, fold in the freeze dried strawberries until they are evenly distributed throughout the rice krispie treats mix.

Pour the cereal mixture into the baking dish and allow the mixture to chill in the fridge for 1 hour.

Cut the rice krispie treats into bars, serve, and enjoy!