Line a 9”x13” baking dish with wax paper or parchment paper. Set aside.
Pour the cocoa krispie rice cereal into the large bowl, and set aside.
In a large pot, melt the butter over low heat. Add the salt when mostly melted.
Stir in the marshmallows once the butter has melted. Continually stir until the marshmallows are completely melted. Add the vanilla, and stir.
Add the chocolate chips. Stir until melted and smooth.
Pour the cereal into the marshmallow mixture. Stir quickly until the cereal is coated.
Pour the cereal bar mixture to the prepared baking dish and gently spread the mixture into an even layer with a rubber spatula. (If the mixture begins sticking, spritz the spatula with the nonstick cooking spray.) Do not press down hard on the mixture, as your treats will be more compact.
Topping:
In a small saucepan over low heat or a microwave safe bowl for 30 seconds, melt the chocolate chips and butter together. Drizzle over the bars in a pattern. Sprinkle on the chocolate sprinkles while the chocolate mixture is still tacky.
Let the treats cool completely, about 45 minutes-1 hour.
Cut into squares with a sharp knife, and enjoy within 2-3 days.
If you've tried this recipe, come back and let us know how it was in the comments or star ratings.
Notes
I cut my treats into 2” squares. If you cut yours larger, you will have less. If you cut them smaller, you will have more.