Grease or line an 8x8 baking pan with parchment paper. Add freeze dried strawberries to a blender or small food processor and blend until you are left with a powdery consistency.

Heat butter in a large pot over medium-low heat until butter is completely melted. Pour in mini marshmallows. Reduce heat to low and mix until the marshmallows are completely melted. Remove from heat and stir in vanilla.

Stir in powdered freeze dried strawberries and then the cereal. Mix the cereal in thoroughly.

Pour into prepared 8x8 pan. Press down with a piece of parchment paper. Allow to cool completely before cutting into squares.