Jell-O Building Blocks

Jell-O Building Blocks

Can you really make edible building blocks? Yes! They're pretty, fun, and require no specialized skills (unless you count heating and pouring). They're a great rainy day activity, and they make really fun party favors. The biggest challenge is keeping them uneaten long enough to play with them!

3 - 9
Est. Time:
1-2 hours

How we did it:

Materials List

  1. jello (1 3 oz. box) - We made 3 2-oz. blocks per color. Regular ice cube trays are 1-oz.
  2. nonstick pan - optional, but it made cleanup much easier!
  3. spatula
  4. square baking mold - or ice cube tray
  5. water
  6. cornstarch (or powdered sugar) - optional
  7. baking sheet (optional)
  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.

  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!

  3. Grown-up step: Heat the gelatin mixture over low heat until the gelatin is dissolved, about 3-4 minutes.

  4. Grown-up step: Pour the gelatin mixture into your mold or ice cube tray. 

  5. Repeat, if desired, until you have as many colors as you like! We made six colors: red, orange, yellow, green, blue, and peach.

  6. Carefully place your mold in the refrigerator. Refrigerate until completely cold and set, about an hour.

  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.)

  8. If desired, dust the bottoms lightly with cornstarch or powdered sugar so they don't stick together when you stack them.

  9. Now you have edible building blocks! You can build a tower or a small house.

  10. And when you're ready to clean up...just eat them!