Add ingredients to the mixing bowl. Add the dry pudding mix, cornstarch, and water to a mixing bowl. Stir until combined.
Using hands, blend until smooth. Using hands, blend until smooth and no longer sticky. Add more cornstarch 1/4 cup at a time, until the mixture is not sticky.
Add sprinkles. Add sprinkles and let kids mix them into the mixture.
This slime is not meant to be eaten. It is nontoxic and ok if kids put it in their mouths, but it's not a food product to eat. Pudding slime can be stored in the fridge between play sessions in an air-tight container. If the slime seems dried out after removing it from the fridge, add 1 tablespoon of water or vegetable oil to make it slimy again. Since it is made with food ingredients, there is potential for pudding slime to mold - check for signs of mold prior to playtime.
Kids Cooking Instructions:
The ⭐️ symbol in the recipe below denotes the steps in which kid cooks may need a helper (depending on age). If there is no ⭐️ symbol, that step (or recipe) doesn't require a helper.