It was a big hit at the party. Some kids liked the "dirt" (especially with grass on top), some preferred the sand, and one chowed down on the "water." But they all thought it was super cool.
This is my very first Instructable, so please bear with me...
Step 1: Materials
• 18 cups of Rice Krispies cereal (or generic equivalent)
• 3 10-oz bags of mini marshmallows
• 1 package mini chocolate chips (we used semisweet)
• 1 cup Ovaltine or other chocolate powder
• 3 boxes blue jell-o
• 1 can white frosting
• green food coloring
• 1 9x13" pan
• 1 8x8" pan
• standard cookware
Step 2: Make plain rice crispy treats
The only tricky part here is that, to get the size right, you need to smoosh it into half a 9x13" pan. We're going to be making 1.5-inch cubes, so you want this to be flat and 1.5 inches thick. I actually measured it with a ruler, but found that using half the pan came out about right. Just butter a big metal spatula, and smash the mix into shape. Be sure to press pretty hard — you want firm squares to work with, not the loose chewy kind.
Cover and place into the fridge for a few hours to harden.