In a sauce pot over medium heat, add coconut oil and marshmallows.Stir combination until marshmallows are completely melted.Add cereal to a large bowl.Pour marshmallow and coconut mixture over cereal and stir together until completely combined.Pour mixture into an 8x8 baking dish and press down (you might need to use your hands).Place in the refrigerator for at least an hour.Cut into squares and enjoy!