Instructions

1. Freeze the bag of M&M's overnight.
2. Melt 8 tablespoons of butter in a large saucepan on medium-low heat.
3. Add 7 cups of Mini Marshmallows to the melted butter.
4. Stir the marshmallows so they are completely covered in the melted butter.
5. On medium-low heat, stir the marshmallows continually until they are completely melted.
6. As soon as the marshmallows are melted, take the pan off the heat.
7. Add 8 cups of Rice Krispie Cereal to the marshmallow mixture.
8. Gently fold the Rice Krispie Cereal into the marshmallow mixture.
9. Save 1/4 cup of M&M's for the top of the Rice Krispie Treats and then pour the rest of the frozen M&M's into the Rice Krispie Treat mixture. (Note: if you don't freeze the M&M's the chocolate will melt and the M&M's will break as you stir them in and the treats won't turn out as pretty.)
10. Add 1 cup of Mini Marshmallows to the Rice Krispie Treat mixture.
11. Fold the mixture until the M&M's and the Mini Marshmallows are mixed into the mixture.
12. Spoon the mixture into a 9x13" pan. (We line the pan with a piece of parchment paper.)
13. Sprinkle the 1/4 cup of M&M's on the top of the treats in the pan.
14. Lightly press the mixture into the pan. 
15. Let the Rice Krispie Treats cool and then cut them into squares.