Step 20: Bake It
Bake at 275 °F (130 °C) for 15 minutes per 1/4 in (6 mm) thickness. DO NOT MICROWAVE. Baking should be completed by an adult. DO NOT EXCEED THE ABOVE TEMPERATURE OR RECOMMENDED BAKING TIME.
I took an old jar lid that I was going to throw out and covered the bottom in green clay. I place the turtle on the green grass then stuck it all in the over and baked Mario and gang at the temp according to the package.