Food Coloring(red and blue/turquoise - I like Betty Crocker Gel Food Colors because the colors are brighter)
Gather your supplies and divide the Rice Krispies and marshmallows in three for the three layers (2 cups Rice Krispies and about 2 cups marshmallows).
Add marshmallows to a microwave safe bowl along with the margarine (1 TB) for a few minutes or until they start to get big and almost touch the top of the microwave. Take them out, stir well and add the food coloring. (We started with the blue, then no food coloring and then the red).
Then add 2 cups of Rice Krispies and stir well. Press into well greased 9x9 pan (a 9x13 works but makes thinner treats).
Repeat with no food coloring and then the red food coloring layer. Let set and ENJOY!