Prepare Your Pan and Strawberry Powder: Grease or line an 8×8 baking pan with parchment paper. This prevents sticking and makes removal easy. Take your freeze-dried strawberries and blend them in a blender or small food processor until they become a fine powder. This strawberry powder will distribute evenly throughout the treats, giving them consistent flavor and a beautiful pink hue.
Melt the Butter and Marshmallows: Heat the salted butter in a large pot over medium-low heat until completely melted. Once melted, add the mini marshmallows to the pot. Reduce the heat to low and stir continuously until the marshmallows have completely melted into a smooth, creamy mixture. The low heat prevents scorching, which can affect both flavor and texture.
Add Flavor Components: Remove the pot from heat and stir in the vanilla extract. The residual heat will help incorporate the vanilla without burning off its delicate flavor. Next, stir in the powdered freeze-dried strawberries until evenly distributed throughout the marshmallow mixture. The powder will quickly melt into the warm mixture, creating a beautiful pink color and infusing it with natural strawberry flavor.
Mix in Cereal and Set: Add the crisp rice cereal to the strawberry marshmallow mixture and fold together thoroughly, ensuring each piece of cereal is coated evenly. Pour this mixture into your prepared 8×8 pan. Using a piece of parchment paper, press the mixture down firmly and evenly into the pan. This compression helps the treats hold together. Allow to cool completely before cutting into squares to ensure clean cuts and the perfect chewy texture.