In a large saucepan over low heat, melt the butter. Once melted, add the mini marshmallows and stir continuously until they are completely melted and well combined with the butter. This mixture should be smooth and gooey.
Remove the saucepan from heat and immediately add the 6 cups of Cocoa Pebbles to the melted marshmallow mixture. Stir gently but quickly to coat the cereal evenly with the marshmallow mixture. It’s important to work fast to prevent the mixture from setting too soon.
Once the Cocoa Pebbles are well-coated, transfer the mixture to a greased 9x13 inch baking pan. Use a spatula or wax paper to press the mixture firmly and evenly into the pan. Be careful not to compress it too much; you want them to remain fluffy.
Allow the Krispie treats to cool at room temperature for about 30 minutes or until they are firm enough to cut.
Once set, remove the treats from the pan and place them on a cutting board. Using a sharp knife, cut them into squares or rectangles for your basic treats, or get creative and cut them into owl or spider shapes.
To create the spiders, take a piece of the treat and press down four pretzel sticks on each side for legs. For the head, place a mini marshmallow on top and use a bit of melted chocolate or icing to attach two mini marshmallows as eyes.
To make the owls, use the orange taffy or Tootsie Rolls to form large eyes on top of the treat. You can also use smaller pieces of candy to create beaks or wings. Let your creativity flow!