In a large pot, melt the marshmallows and butter over medium-low heat. Be sure to stir them often so that the marshmallows don’t burn.
Once melted, remove the pot from the heat and stir in the Rice Krispies until they’re evenly coated.
Lastly, fold in the animal cookies just until they’re mixed throughout the krispies. Optional, fold in a couple tablespoons of sprinkles. If you use black, keep in mind the color might bleed a bit so don’t stir too much.
Press the mixture into a 13 x 9 pan sprayed with baking spray. You can also use parchment paper + cooking spray if you want to be sure they don’t stick. I lightly press down on them with a fondant smoother.
Let the treats cool a bit and then drizzle them with pink chocolate and press the kisses into the chocolate on top. Allow them to cool completely and then cut into rectangles.