Grease an 8x8in. pan and line with parchment paper. Set aside.
Melt the butter in a large pan over medium heat. Add mini marshmallows, cocoa powder, and chopped dark chocolate. Stir constantly until melted and smooth. Add 1 teaspoon vanilla, stir to combine.
Add 5 cups cereal, millet, and stir to fully coat. This will be messy!
Quickly transfer to the prepared pan. Cover with wax paper and press hard to form the crispies (this is what holds them together!). You can also press with the base of a sturdy glass.
While warm, sprinkle with flaky sea salt. Let sit for 2 hours to cool before slicing.
Make your Icing
Combine 1 cup powdered sugar with 1 Tablespoon meringue powder in a small bowl. Add 1 Tablespoon water and stir to combine. If needed, add up to ½ Tablespoon more water, stirring to combine. Keep in mind you want this icing to hold its shape and not be too runny, so be careful of adding too much water!
Once the crispies are cooled, cut into 16 pieces (4 x 4). Drizzle the treats with the icing and add googly eyes or sprinkles. Enjoy!
Keyword crispies, dark chocolate, Halloween, krispies, Rice Crispies, Rice Krispies
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