To adapt a regular recipe for a slow cooker, use less liquid, cut ingredients to suit the long cook, and stretch the time. The closed lid traps moisture, so a pot that would simmer down on the stove stays wet in a slow cooker. Treat the numbers here as rough guides and check the maker’s guide for your model’s settings.
Cut Back the Liquid
Very little liquid evaporates under the lid, and meat and vegetables release juices of their own. As a rule of thumb, reduce the liquid in a stovetop or oven recipe by roughly a third to a half. You can always thin a sauce at the end, but it is harder to rescue a watery one.
Convert the Time
Recipes often list a rough match between settings. A common guide is that a dish needing about an hour of simmering may take 2 hours on high or 4 hours on low, though that varies. Use it as a place to begin and look at the food rather than the clock.
| Original method | Slow cooker idea |
|---|---|
| 30 minutes of simmering | 1 to 2 hours on high |
| 1 hour of simmering | 2 to 3 hours on high, or 4 to 6 on low |
| Oven braise, 2 to 3 hours | 6 to 8 hours on low |
Layer with Care
- Put dense root vegetables on the bottom, where heat is strongest.
- Add meat on top, trimmed of excess fat.
- Pour in the liquid last, covering the meat partly rather than fully.
- Keep the pot about half to two-thirds full, or as the guide suggests.
Timing for Delicate Ingredients
- Dairy: stir in cream, milk or yogurt during the last 15 to 30 minutes so it does not curdle.
- Fresh herbs: add at the end; long cooking dulls their flavor.
- Quick-cook items: peas, greens and shrimp-type foods go in near the finish.
- Pasta and rice: cook separately, or follow a recipe made for slow cookers.
Cut meat into larger, even chunks than a stovetop recipe calls for, since small pieces can turn stringy over a long cook. Trim visible fat, because it melts into the liquid.
Thicken and Season at the End
If the sauce is thin, take the lid off for the final 30 minutes on high, or stir in a flour or cornflour slurry. Taste at the end, since long cooking mellows salt and spice and you may want to add more.
Worked Example: Converting a Stovetop Stew
Say a recipe calls for beef, onions, carrots, potatoes and two cups of stock, simmered on the stove for about two hours. Here is one way to translate it.
- Cut the meat into chunks about the size of a walnut or a little bigger, and trim the thick fat. Pat it dry if you plan to brown it first.
- Brown the meat in a pan, if you wish, and scrape the browned bits into a little of the stock so the flavor goes into the pot.
- Cut the root vegetables into large, even pieces and place them across the bottom of the cooker.
- Set the meat on top and add onions, garlic and seasoning.
- Cut the stock to roughly half or two-thirds of the original amount, then pour it in so it comes part way up the food.
- Put on the lid and choose low for the longer cook or high for the shorter one, using the table above as a first guide and the maker’s guide for your model.
- Near the end, check that the meat is tender and has reached the safe internal temperature given in food-safety guidance. Stir in any quick-cook vegetables, herbs or dairy, and thicken if needed.
Common Scenarios
Converting a soup
Soups need less change than stews because they are meant to be liquid. Keep the liquid close to the original amount, but expect a milder concentration of flavor, and adjust the seasoning at the end.
Converting a casserole that uses pasta or rice
Dry pasta and rice can turn mushy or absorb all the liquid over a long cook. Cook them separately and stir them in at the end, or look for a recipe written for the slow cooker.
Cooking a roast
A roast needs only a small amount of liquid, enough to cover the base of the pot. Large pieces cook more slowly in the centre, so rely on food-safety guidance for internal temperature rather than time alone.
Preparing the night before
Chop ingredients and refrigerate them in separate containers, then assemble in the pot in the morning. Keep raw meat covered and apart from other foods, and follow storage guidance from food-safety sources.
Mistakes to Avoid
- Keeping all the original liquid. Without evaporation the sauce ends up thin and bland.
- Filling the pot to the rim. Food at the top may cook unevenly and the lid can rattle or spill. Stay within the fill range in the maker’s guide.
- Adding frozen meat. Thaw it first according to food-safety guidance, because the pot may take too long to bring it to a safe temperature.
- Lifting the lid often. Each peek lets out heat and adds time to the cook.
- Adding dairy at the beginning. Long heat can make milk, cream and yogurt split.
- Using small, uneven pieces. They cook at different speeds, so some turn to mush while others stay firm.
Quick Troubleshooting
| Symptom | Likely cause | What to try |
|---|---|---|
| Sauce is watery | Too much liquid or lid kept closed | Vent the lid on high for 30 minutes or add a slurry |
| Vegetables are still firm | Pieces too large or placed at the top | Cut smaller and put them on the bottom next time |
| Meat is dry or stringy | Cooked too long or pieces too small | Use larger chunks and shorten the time |
| Dairy has curdled | Added too early | Stir it in during the final 15 to 30 minutes |
| Flavor is flat | Long cooking dulls seasoning | Taste at the end and adjust salt, acid and herbs |
Glossary
- Low and high: The two common heat settings; both reach a similar final temperature, high just gets there sooner.
- Slurry: A thickener made by mixing flour or cornflour with cold water before adding it.
- Braise: To cook food slowly in a small amount of liquid with a lid on.
- Sear: To brown the outside of food over strong heat before slow cooking.
- Insert: The removable ceramic or metal pot that sits inside the heating base.
- Keep-warm setting: A low setting meant for holding cooked food, not for cooking it.
FAQ
Should I brown meat first?
It is optional but adds depth of flavor. Brown it in a pan, then add it to the pot, and deglaze the pan with a little liquid so the browned bits are not wasted.
Can I open the lid to check?
You can, but each peek lets out heat and adds time. Check sparingly, and when you do, replace the lid promptly.
Can I leave food on the keep-warm setting?
That setting is meant for holding food briefly once it is cooked. For how long cooked food may safely sit, and how to cool and store leftovers, follow food-safety guidance and the maker’s guide.
Why is my slow cooker food bland?
Long cooking mutes salt, spice and fresh flavors. Season in stages, add herbs and a splash of something acidic at the end, and taste before serving.
Can I convert any recipe?
Most braises, stews, soups and sauces convert well. Recipes that rely on crisp textures, such as fried foods or crusty bakes, are poor matches because the lid traps steam.
The Short Version
Use less liquid, convert the time with a rough guide, layer dense foods low, and add delicate foods late. Finish by tasting, thickening and checking doneness against food-safety guidance. Follow the maker’s instructions for your model.