Gather 3 medium, microwaveable safe bowls.
Place 2 cups marshmallows and 1 tablespoon butter into each bowl.
Microwave each bowl for about 45 seconds to 1 minute, or until marshmallows are melted.
Stir with a spoon to mix the marshmallows and butter together.
In one bowl, add in red food coloring until desired shade of color is reached.
In a different bowl, add in blue food coloring until desired shade of color is reached.
Add 2 cups cereal to each bowl and mix well.
At this point, you should have one bowl of red colored cereal, blue colored cereal, and normal (non colored) cereal.
Grease an 8×8 baking pan.
Pour blue mixture into pan first. Spray cooking spray on your hands and press into the pan evenly.
Next, pour in the non colored cereal on top of the blue and press into pan evenly.
Pour the red cereal on top and again, press into the pan evenly. *You may have to re-spray your hands with each layer
Allow pan to set up for a least 3 hours and cut into desired size bars!!