For the Crust:
Mix Rice Krispies and powdered sugar together until well blended.
Add melted butter and stir until mixture is crumbly and sticks together.
Press into the bottom of an a pie plate or 8x8 baking dish.
For the Filling: Combine sweetened condensed milk and lemonade, whisk together. Fold in whipped topping.
Pour the mixture over the Rice Krispie crust together with strawberry chunks. Spread evenly.
For the topping: Stir together butter, sugar and Rice Krispies until well combined. Sprinkle over the top of the lemonade layer.
Freeze overnight (or at least 9-10 hours).
When ready to serve, take from the freezer, let sit on the counter for 3-5 minutes or until you can cut treat. Serve immediately.
Store any leftovers in freezer immediately.