Grease or line a 9x9 baking pan with parchment paper. Next, add the dried strawberries to a gallon plastic bag and crush them with a rolling pin until they are a powder. Alternatively, you can grind them in a food processor.
Next, add the butter to a large pot or Dutch oven, and heat it over medium-low heat until completely melted. Then, measure 2 cups of the mini marshmallows and set them aside (these will be added later in Step 4). Once melted, lower the temperature to low, and add the marshmallows you didn’t set aside, vanilla extract, and salt. Then, use a non-stick spatula to stir the mixture until the marshmallows are completely melted and the mixture is smooth.
Once melted, remove the pot from the heat and stir in the crushed strawberries until well mixed. Then, add the rice crispy cereal until completely combined.
Next, add the remaining 2 cups of the mini marshmallows to the pot and, to add a little extra texture and strawberry flavor, add a handful of crushed strawberries and stir until combined. Stir the mixture until the marshmallows are just combined but be sure to move quickly and not over mix, as we don’t want the marshmallows to melt into the mixture (we want the marshmallow pieces to be somewhat intact to create beautiful marshmallow pools.
Transfer the cereal mixture to the prepared making dish and press it into an even layer in the pan. Add a bit of crushed strawberries to the top of the treats and gently press them down to adhere to the treats. Pro Tip: Use parchment paper to press down the treats for easy clean up. Alternatively, you can put some nonstick spray on your hands to press the treats down.