
Knox Blox is a fun, versatile, and kid-friendly treat that can be made using Jello and gelatin. The treat, which can be cut into different shapes, is a perfect melt-resistant snack for hot summer days. While Knox Blox can be made in a glass dish or pan, it is unclear whether a foil pan can be used. However, it is worth noting that the recipe for Knox Blox involves pouring a mixture of Jello, gelatin, and water into a pan and refrigerating it for 2-5 hours until it is firm.
| Characteristics | Values |
|---|---|
| Pan size | 9x13 inches |
| Pan type | Glass dish or baking pan |
| Refrigeration time | 4-5 hours |
| Jello type | Sugar-free |
| Jello flavour | Lime, orange, pineapple |
| Gelatin type | Knox unflavoured gelatin |
| Gelatin quantity | 4 packets |
| Water quantity | 4 cups |
| Water type | Boiling |
| Cutting shape | Squares or fun shapes |
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What You'll Learn

Knox Blox recipe
Knox Blox is a fun, colourful dessert that's perfect for kids and adults alike. This versatile recipe can be made in a foil pan, a glass dish, or even a large cookie sheet—whatever you have on hand will work! Here's a detailed guide to making your own delicious Knox Blox:
Ingredients:
- Knox Gelatin (unflavoured)
- Jello (any flavour; you can also use sugar-free Jello)
- Water (boiling)
- Optional: fruit juice, soda, or a sweetener of your choice (e.g. sugar, honey, or low-calorie sweetener)
Utensils:
- Large saucepan or bowl
- 9x13 inch pan or large cookie sheet (for cut-out shapes)
- Refrigerator
- Optional: cookie cutters
Method:
- If you want to make the traditional version, start by pouring 1 cup of cold water into a large bowl. For a fruitier variation, you can substitute fruit juice for the water.
- Sprinkle the gelatin powder over the liquid while stirring. Do not add all the gelatin at once to avoid clumping.
- Let the mixture stand for about 1 minute.
- Add 3 cups of boiling water and the Jello powder. If using soda or a sweetener, add it now.
- Stir the mixture over low heat until the gelatin and Jello are completely dissolved.
- Pour the mixture into your chosen pan or dish.
- Place the pan or dish in the refrigerator and let it cool for about 2 hours or until firm (approximately 4-5 hours).
- Once set, cut the Knox Blox into squares or use cookie cutters to create fun shapes.
Tips:
- Cover the baking dish with a lid or plastic wrap to prevent the Knox Blox from absorbing other flavours in the fridge.
- If you have leftover scraps from using cookie cutters, melt the Jello down and allow it to set again in a smaller pan. Repeat as needed to minimise waste.
Now you're ready to enjoy your very own Knox Blox! This recipe is perfect for a hot summer day or as a nostalgic treat to share with friends and family.
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Using fruit juice instead of water
Knox Blox is a fun and tasty treat that can be made in a foil pan. They are essentially the original Jello Jigglers and are made by combining Jello and gelatin, which are then poured into a pan and refrigerated. The treat is then cut into squares or different shapes using cookie cutters.
While the standard recipe calls for the use of water, you can easily substitute it with fruit juice for a healthier and more flavourful alternative. Fruit juice Knox Blox are a great way to add a bit of extra nutrition to this tasty treat. The process for making them is very similar to the standard recipe, but with a few tweaks.
To make Fruit Juice Knox Blox, start by sprinkling gelatin over cold fruit juice in a large bowl. Let it stand for about a minute. Then, add hot fruit juice and stir the mixture until the gelatin is completely dissolved, which should take around 5 minutes. At this point, you can also stir in some sugar or honey to sweeten the mixture, if desired.
Once the gelatin has dissolved, pour the mixture into a 13x9-inch foil pan. You can use a glass dish or another type of pan if you prefer. Place the pan in the refrigerator and let it chill until the mixture is firm, which should take around 3 to 5 hours. Finally, cut the firm mixture into 1-inch squares or use cookie cutters to create fun shapes.
Fruit juice Knox Blox are a delicious and nutritious treat that can be enjoyed by people of all ages. They are a great way to add a bit of extra flavour and health benefits to the standard Knox Blox recipe. By using fruit juice instead of water, you can increase the vitamin and mineral content of this treat, making it a more wholesome snack option.
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Making different shapes
Knox Blox is a versatile recipe that allows you to create fun shapes. You can cut the jello into simple squares or get creative by using cookie cutters to make different shapes. If you want to make different shapes, pour the mixture onto a large cookie sheet or a flat foil pan and let it cool. Then, use cookie cutters to create fun shapes. You can also use small cookie cutters to make event-themed shapes.
One source suggests that using a foil pan is not a problem as long as it is flat and can fit in your refrigerator. However, it is important to note that the mixture should be poured into a pan that is at least 9x13 inches in size. This will ensure that the mixture is not too thin and has enough time to set properly.
If you want to make thinner Knox Blox, you can use a smaller pan, such as an 8x8 inch pan. You can also try cutting the set jello into very small pieces and layering it with whipped cream in wine glasses or champagne flutes for a simple make-ahead dessert.
Another option is to pour the Knox Blox mixture into individual containers to make homemade jelly cups. This will give you a perfect, melt-resistant snack that is great for packing in your kids' lunches.
The Knox Blox recipe is a timeless and kid-friendly treat that has been around for decades. It is a simple and versatile recipe that can be adapted to different occasions and tastes. Whether you're making them as a fun activity with your kids or looking for a nostalgic treat, Knox Blox is a great option that is sure to bring smiles to faces young and old.
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Layering with whipped cream
While there is no explicit mention of using a foil pan for making Jello Knox Blox, the recipe does call for a glass dish or pan, a baking pan, or a glass or Pyrex dish. It is worth noting that some recipes specifically instruct against using metal pans, as they can affect the setting process. Therefore, it is recommended to use a glass or ceramic dish to ensure the best results.
Now, for the fun part: layering with whipped cream! Here is a step-by-step guide:
Step 1: Prepare the Jello Knox Blox Base
Start by making the Jello Knox Blox base following the standard recipe. This involves combining Jello and gelatin in a bowl, adding boiling water, and stirring until the mixture is completely dissolved. You can use a variety of pan sizes, depending on your desired thickness for the Knox Blox. An 8x8, 9x13, or 13x9-inch pan will all work well.
Step 2: Chill the Base
Place the pan in the refrigerator for about 2 hours to cool and set the base. This step is crucial, as you want the base to be firm enough to hold the weight of the whipped cream layer.
Step 3: Add the Whipped Cream
Once the Jello Knox Blox base is firm, remove it from the refrigerator and spread a layer of whipped cream on top. You can use heavy cream or whipping cream, depending on your preference. The cream will rise during chilling, so you only need to add enough to create a thin layer.
Step 4: Chill Again
After adding the whipped cream layer, return the pan to the refrigerator and chill it for about 4 hours, or until the cream layer is firm. This will create two distinct layers: a creamy layer and a clear Jello layer.
Step 5: Serve and Enjoy
Remove the dessert from the pan and cut it into squares or any desired shape. Knox Blox is typically enjoyed as a finger food, so feel free to get creative with cookie cutters to make fun shapes. Your layered Jello Knox Blox with whipped cream is now ready to serve and enjoy!
Feel free to experiment with different flavors of Jello and gelatin, as well as fruit juices, to create a variety of tasty treats. Enjoy your delicious and simple make-ahead dessert!
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How to store
While there is no explicit mention of using a foil pan to make Knox Blox, there is also no suggestion that it would be unsuitable. The recipe is versatile and adaptable, so you can use whatever you have available. Knox Blox can be made in a glass dish or a pan, so a foil pan should work just as well.
Once you've made your Knox Blox, there are a few things to keep in mind for storage. Firstly, it's important to cover the baking dish with a lid, plastic wrap, or something similar. This will prevent your Knox Blox from absorbing other flavours in the fridge.
You can store your Knox Blox in the refrigerator, where they will keep for several hours or until firm. The setting time is usually around 4 to 5 hours, after which you can cut them into squares or shapes.
If you want to make individual servings, you can pour the mixture into small, sealable containers before refrigerating. This will give you perfectly portioned, melt-resistant snacks that are great for packing in lunches or taking on the go.
Leftovers can also be stored in the refrigerator. Simply melt the leftover Knox Blox and allow the mixture to set again in a smaller pan. Repeat this process until you've used up all the mixture.
Knox Blox are a fun and versatile treat that can be stored in a variety of ways to suit your needs. Whether you're making a big batch for a party or individual servings for lunches, they're a tasty and refreshing snack that's perfect for summer.
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Frequently asked questions
Yes, you can do Jello Knox Blox in a foil pan.
The recipe for Jello Knox Blox is quite simple. First, heat four cups of water until it boils. Next, combine the Jello and gelatin together in a bowl. Pour in the water and stir until the mixture is completely dissolved. Finally, pour the mixture into a pan and put it in the refrigerator for about two hours to cool and set. Once set, cut the Jello into squares or use cookie cutters to make fun shapes.
It typically takes about two hours for Jello Knox Blox to set in the refrigerator. However, some people recommend leaving it for up to five hours to ensure it is completely firm.
Yes, you can use fruit juice instead of water to make Jello Knox Blox. This is a popular variation that makes the treat a little healthier and adds some extra flavour.











































