You will need:
Red food coloring
Green food coloring
Mini chocolate chips
Small circular cake pan
Slightly larger circular cake pan
Recipe for Rice Krispies:
3 TBLS of butter
4 cups of mini marshmallows
5-6 cups of Rice Krispies (I lean toward 5, to ensure there is enough marshmallow goodness)
1 tsp of vanilla extract (I add this, the classic recipes does not have this)
We ended up making two watermelons and a bit extra of just plain green Rice Krispie bars (they would make great Minecraft Creeper Treats). For the first batch of Rice Krispies, melt the butter, marshmallows completely, then add the red food coloring. Next add the Rice Krispies. Let this mixture cool a tiny bit, then press into a small cake pan. Be sure that the pan is coated nicely with some butter. I find it easiest to really butter up your hands and press the treats in the pan.
While the red Rice Krispies are cooling a bit, mix up the green Rice Krispies. Butter two slightly larger cake pans, flip the red Rice Krispies into this larger pan. Then add the green Rice Krispies around the red Rice Krispies. Let it cool a bit more, then add the mini chocolate chips. If the treats are too hot the mini chocolate chips will melt, so be patient.
We are thinking of making oranges, lemons and limes next!