Place Rice Krispie cereal in a large mixing bowl and set aside.
In a saucepan over low heat, melt the butter. Add the mini marshmallows, stirring constantly, until they are completely melted and the mixture is smooth.
Pour the melted marshmallow mixture over the Rice Krispies. Stir until well combined.
Fold in the crumbled candied bacon.
Transfer the mixture to a lightly greased 8x8-inch pan. Press down with a piece of wax or parchment paper to flatten.
Allow to cool completely. For quicker cooling, place in the fridge for about 5 minutes.