What Is a Silicone Souper Cube? (Bean Soup Guide)
A Souper Cube is a flexible silicone mold for freezing food in measured portions, not a pot for cooking soup. Cook bean soup in a suitable pot, cool it safely, then fill the mold and freeze it. Once the portions are solid, transfer them to a sealed container or freezer bag for storage.
The most important number in this process is not the mold’s oven rating. It is the cooling time: FDA Food Code guidance says cooked soup should cool from 135°F to 70°F within two hours, then reach 41°F or colder within the next four hours. That helps explain why pouring a fresh, hot batch straight into a mold and putting it in the freezer is not a safe shortcut.
Choose the Right Cookware and Prepare the Silicone Mold
A Souper Cube is designed to portion and freeze food after cooking. Silicone conducts heat poorly, so the mold is not a useful cooking vessel and is not compatible with induction as cookware. Use a stainless-steel or enameled pot for the soup, and set the clean mold on a rigid tray before filling it.
Silicone’s flexibility is useful in the freezer, but it also makes a full mold hard to carry. A rimmed baking sheet or another flat, freezer-safe tray supports it and helps prevent spills. The tray should fit in your freezer before you start filling the cavities.
Molds and lids can differ by model. Some Souper Cubes molds are commonly listed as oven-safe up to 415°F, or about 213°C, but check the instructions for your exact product. That rating is not permission to cook soup in the mold. Do not put it on a stovetop, induction hob, or direct flame. Do not assume a lid shares the mold’s rating, either.
No preheating or added oil is needed to freeze soup in the mold. Silicone has no single thermal-shock limit that applies to every product, so follow the maker’s temperature guidance and avoid abrupt temperature changes. For freezer storage, aim for 0°F (−18°C) or below.
| Task | Use this | Avoid this |
|---|---|---|
| Cook bean soup | Stainless-steel or enameled pot | Silicone mold on a burner |
| Support filled cavities | Rigid tray that fits the freezer | Carrying a floppy, full mold |
| Freeze portions | Freezer at 0°F (−18°C) or below | Treating an oven rating as a cooking method |
| Check heat limits | Instructions for the exact mold and lid | Assuming all silicone products have the same rating |
A practical check before cooking: place the empty mold on its tray, confirm both fit in the freezer, and make room for the tray to sit level. This small setup step can prevent a mess later.
Cook, Cool, and Portion Bean Soup Safely
Cook the soup in the pot, then cool it before portioning. For safe cooling, FDA Food Code guidance sets two limits: reduce the soup from 135°F to 70°F within two hours, then from 70°F to 41°F or below within four more hours. Freezing does not undo unsafe cooling.
Start with the beans. Dried kidney beans need special care because they contain a natural lectin that can cause illness if the beans are not cooked properly. Bring them to a full boil for at least 30 minutes, then simmer until tender. Slow cooking alone may not destroy enough lectin. Canned kidney beans are already cooked; drain and rinse them if your recipe calls for it.
After cooking, divide a large batch into shallow containers, or use an ice bath to speed cooling. Stir with a clean utensil while the soup cools. Do not leave a deep, full pot sitting at room temperature to cool slowly. Check temperatures with a food thermometer if you have one, and keep track of the cooling times.
Only fill the mold once the soup has cooled safely. Set it on its rigid tray, then ladle or pour soup into the cavities, leaving room at the top for expansion as it freezes. Cavity sizes vary, so use the fill lines or capacity listed for your model rather than assuming every cube holds the same amount. If there is no fill line, leave a little headroom.
Batch example: For a large pot of bean soup, divide it among several shallow containers for cooling rather than placing the whole pot in the fridge. Once the soup reaches 41°F or below within the stated time, portion it into the mold. The mold’s flexible shape makes it handy for freezing, but it does not make a large hot batch cool faster or safer.
Keep the time and temperature limits in view. If soup has not cooled within the required periods, do not assume that freezing will make it safe. Freezing does not reverse unsafe cooling or remove toxins that may have formed.
Release, Store, and Clean Souper Cubes
Freeze the filled mold on its tray until the portions are firm throughout. The time needed depends on your freezer, cavity size, and soup ingredients, so use firmness rather than a fixed number of hours as your check. Once solid, flex the mold to release the portions and pack them in an airtight freezer bag or container.
Label the package with the soup name and freeze date. Sealing portions helps limit exposure to air, which can dry the surface and reduce quality. Keep the freezer at 0°F (−18°C) or below, and use the portions promptly for best quality. The mold helps make even portions, but it does not preserve soup quality indefinitely.
| Step | What to do | Why it helps |
|---|---|---|
| Set up | Place the mold on a level, rigid tray | Supports silicone while you move it |
| Fill | Use cooled soup and leave headroom | Allows for expansion and reduces spills |
| Freeze | Keep the tray level until portions are solid | Helps portions keep their shape |
| Transfer | Seal portions in a labeled bag or container | Limits air exposure and makes contents easy to identify |
| Clean | Follow the model’s care instructions | Care guidance can vary by product |
Many silicone molds are dishwasher-safe, but check your exact mold’s care instructions. If washing by hand, clean the cavities and corners well, rinse, and dry fully before putting the mold away. Avoid using a knife or other sharp tool to pry out frozen portions; flex the silicone instead.
Batch example: If you make two kinds of bean soup, freeze them in separate labeled bags after releasing the portions. This prevents confusion later, especially when the frozen cubes look alike. Write the date and soup type on each package before placing it in the freezer.
Reheat and Serve Bean-Soup Portions
Take a frozen portion out of the mold and reheat it in a pot or a microwave-safe container. Do not reheat soup in the silicone mold unless the instructions for that exact model expressly say it is microwave-safe. A mold’s freezer or oven rating does not automatically mean it is suitable for microwave use.
For stovetop reheating, place the portion in a pot over suitable heat and stir as it thaws and warms. For microwave reheating, use a microwave-safe bowl, cover it in a microwave-safe way, and stir during heating so the soup warms more evenly. Follow food-safety guidance for reheating leftovers, and make sure the soup is hot throughout before serving.
A 1-cup cavity, if that is the capacity of your model, can make a convenient single serving; larger cavities may suit family portions. Check the mold’s stated capacity, since Souper Cube models and cavity sizes vary. If a portion is too large for one meal, thaw only what you need or divide it after it has softened enough to handle safely.
Frequently asked questions
Can I cook bean soup in a Souper Cube?
No. Cook the soup in a suitable pot, such as stainless steel or enameled cookware, then use the mold to freeze cooled portions.
Can I put a Souper Cube on an induction cooktop?
No. The silicone mold is not induction-compatible cookware. Do not use it on an induction hob, stovetop, or direct flame.
Can I pour boiling soup into the mold?
Do not pour boiling-hot soup into the mold and put it straight into a crowded freezer. Cool the soup safely first, then fill the mold on a rigid tray.
How cold should my freezer be?
Aim for 0°F (−18°C) or below for frozen storage. Keep sealed portions in the freezer and use them promptly for best quality.
What is the mold’s maximum oven temperature?
Some Souper Cubes molds are commonly listed as oven-safe to 415°F (about 213°C). Check the instructions for your exact model and lid. This oven rating does not make the mold a soup-cooking vessel.
How do I cool a large batch of bean soup?
Divide it into shallow containers or use an ice bath. Cool from 135°F to 70°F within two hours, then to 41°F or below within four more hours.
Do dried kidney beans need to be boiled before simmering?
Yes. Bring dried kidney beans to a full boil for at least 30 minutes before simmering until tender. Slow cooking alone may not destroy enough lectin.
Can I microwave a frozen soup portion in the mold?
Only if the instructions for that specific model expressly allow microwave use. Otherwise, release the portion into a microwave-safe container before reheating.
How do I get frozen soup cubes out?
Flex the mold to release the solid portions. Avoid prying with a knife or other sharp tool.
Does freezing make soup safe if it cooled too slowly?
No. Freezing does not undo unsafe cooling or destroy toxins that may already have formed. Follow the cooling time and temperature limits before freezing.
A Souper Cube is most useful as a portioning tool after the soup is cooked and cooled. Use the right pot for cooking, meet safe cooling limits, freeze the portions on a supported tray, then seal and label them for storage.
(This article was written by one of our staff writers, Julian R. Hayes. Visit our Meet the Team page.)
