Grease an 8 x 8 inch cake pan with butter and line it with parchment paper.
Extra butter for greasing pan (about ½ to 1 tbsp)
Add freeze dried berries to a food processor and blend until they become a coarse powder.
2.4 oz freeze dried blueberries or can use mixed berry (2 bags, 1.2 oz each), 2.4 oz freeze dried strawberries (2 bags, 1.2 oz each)
Melt butter in a large pot or Dutch oven on medium-low heat, about 1 to 2 minutes.
6 tbsp salted butter
Add marshmallows, reduce heat to low, and cook until smooth (about 3 to 4 minutes) stirring occasionally with a silicone spatula or spoon. Be patient, you don’t want the marshmallows to caramelize or burn.
16 oz mini marshmallows
Remove from heat and mix in the vanilla and the salt, then stir in the powdered freeze dried fruit until fully incorporated.
2.4 oz freeze dried blueberries or can use mixed berry (2 bags, 1.2 oz each), 2.4 oz freeze dried strawberries (2 bags, 1.2 oz each), 1 tsp vanilla extract, ¼ tsp salt
Mix in the cereal, being sure to do so quickly before the marshmallows cool too much.
4 cups crisped rice cereal, 1 cup Fruity Pebbles cereal
Pour the marshmallow cereal mixture into the prepared pan and lightly press into an even layer. You can do this with your hands, a spoon, or a piece of parchment paper placed on top of the marshmallow treats.
Cut these treats into large squares or bite-sized snacks and serve at room temperature.