Place dark chocolate chips, milk chocolate chips and nutella in microwave safe bowl.
Microwave until the chocolate and nutella is melted, while stirring every 30 seconds. Set aside.
Line a baking tray with baking sheet. Take 1/2 cup of mini marshmallows, spread on the baking sheet to make the base for the bars.
To the melted chocolate and nutella, empty 1/2 cup of marshmallows, rice crispies and dried strawberries. Stir until mixed well.
Pour this mixture on top of marshmallows spread on the baking sheet. Spread evenly with plastic spatula.
Refrigerate for at least an hour or until it is completely set. Take it out and cut in to pieces.