I had a weakness for Nestle Crunch bars recipe when I was pregnant with my twins in 1995

Prepare baking dish: Line an 8×8 inch baking dish with parchment paper.
Combine cereal: Place the crispy rice cereal in a large mixing bowl.
Melt chocolate mixture: In a microwave-safe bowl or on the stovetop, combine the chocolate chips, peanut butter, maple syrup, and coconut oil. Heat until melted and whisk until smooth.
Combine ingredients: Pour the melted chocolate mixture over the crispy rice cereal and mix until well combined.
Pour into dish: Pour the mixture into the prepared baking dish.
Refrigerate: Refrigerate until firm, at least 1 hour.
Cut and serve: Remove from the fridge and cut into bars.