Heat or cook the food by only using the sun's heat!

Step 1: Get the Stuff

Empty cereal box
Aluminum foil
Knife or scissors
Straw (optional)
Tape

Step 2: Tape the Top of the Cereal Box

Tape the open side of the cereal box with any kind of tape (the less air or holes in the box, the better the oven will cook)

Step 3: Cut the Box

Cut a rectangle until you get a flap like a pizza box

Step 4: Put on Aluminum Foil

Put aluminum foil on the bottom and on the flap all over with tape, even the edges inside. I used shiny side up.

Step 5: Tape the Straw to the Box (optional)

Step 6: Put Any Food Inside

Put it inside the box where you can wait for it to cook. The sun will reflect off the foil and cook the food. You can make a grilled cheese sandwich, s'mores, or heat a pizza up. I didn't have any bread to make a grilled cheese so I melted some cheese to show you how great it works! Experiment with it! :)