Melt the butter and marshmallows in a large microwave safe bowl. Heat it in 30 second increments and stir between each one until fully meted.
Once it’s melted, mix in the Rice Krispie cereal until completely coated. Allow this mixture to set up room temperature for 5-8 minutes to cool slightly.
Fold in the chocolate chips gently so that they don't melt.
Spread evenly into the prepared pan. Use a piece of wax to press the Rice Krispies into the bottom of the pan. I spray the wax paper with a non-stick spray so that it doesn’t stick to the wax paper.
Allow to cool completely before serving. Slice, serve and enjoy!
Notes
*You can make half of this batch for thinner rice krispie treats. We love thick rice krispie treats!
*Do not store in the refrigerator. They are best left to cool at room temperature so that the remain gooey and delicious!