Step-by-step tutorial
Step 1
You'll want everything handy before you start. For blocks, you can use cube-shaped candy molds or just an ice cube tray. (Keep in mind that the molds we used make 2- and 4- oz. cubes, while standard ice cube trays make 1-oz. cubes.) You'll need at least one 3-oz. package of Jello and 2 small unflavored gelatin packets per color. (For 6-oz. packages of Jello, you'll need to use 4 gelatin packets.) If you're using a silicone tray, you may want to set it on a baking sheet so it's easy to move once it's full of hot gelatin.
Step 2
Add 1/3 cup water to the nonstick skillet. Sprinkle 2 packets of unflavored gelatin and 1 box of Jello over the water. Stir to combine. This is a fun step for kids, because they're always surprised by the color change when the water is added!
Step 3
Grown-up step: Heat the gelatin mixture over low heat until the gelatin is dissolved, about 3-4 minutes.
Step 4
Grown-up step: Pour the gelatin mixture into your mold or ice cube tray.
Step 5
Repeat, if desired, until you have as many colors as you like! We made six colors: red, orange, yellow, green, blue, and peach.
Step 6
Carefully place your mold in the refrigerator. Refrigerate until completely cold and set, about an hour.
Step 7
Grown-up step: To unmold, very carefully pry the blocks out with a toothpick or butter knife. (Don't worry -- they're much sturdier than they look.)
Step 8
If desired, dust the bottoms lightly with cornstarch or powdered sugar so they don't stick together when you stack them.
Step 9
Now you have edible building blocks! You can build a tower or a small house.
Final result!
And when you're ready to clean up...just eat them!
