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How to use a slow cooker

Make friends with your slow cooker to reap the rewards in the cooler months.

stirring stew in slow cooker
Last updated: 04 December 2020

When just a couple of minutes of prep in the morning means coming home to dinner all but on the table in the evening, we call that a win! 

Whether you're a regular slow stewer, or your slow cooker just slowly gathers dust in the cupboard, these tips from CHOICE home economist Fiona Mair will help you get the best from this benchtop cooking appliance.


  • Ingredients used in slow cookers are inexpensive. Buying cheaper cuts of meat that require longer cooking times will give better flavour and a tender result. (Take a look at our slow-cooked corned beef recipe that's used in our slow cooker test.)
  • Dried legumes, beans and pulses are perfect for the slow cooker and are cheap to buy. Boil dry beans for at least 10 minutes beforehand to destroy toxins that will otherwise survive the lower temperatures of a slow cooker (or soak overnight, then drain and rinse before using).
  • Most ingredients can be prepared the night before, reducing prep time in the morning.
  • For better flavour development, sear meats and cook off any spices before slow cooking. Some models of slow cookers let you sear in the slow cooker bowl, and some have a bowl that can be placed directly on a stovetop. This means you won't need to use a frypan as well, cutting down on washing up.
  • Food cut into similar-sized chunks will cook more evenly. It's best to cut fast-cooking vegetables in larger pieces and add halfway through the cooking time.
  • Condensation can build up under the lid which can increase the amount of liquid in the slow cooker and produce a watery sauce and weaker flavour. Add less liquid than required initially. You can always thicken it at the end of cooking.
  • All food should be completely thawed, and perishable food should be kept refrigerated before putting it into the slow cooker. Read more refrigerator food safety tips in our fridge temperature guide.


  • If you've left the slow cooker bowl in the fridge overnight because you've pre-prepared ingredients, take it out of the fridge at least a half hour before turning on the machine, otherwise you may need to cook the meal for longer.
  • The auto-cook setting speeds up the cooking process slightly. It uses the high setting initially for approximately 30 minutes then reduces to low setting for the remainder of the cooking time. This is useful if your slow cooker is at maximum capacity.
  • Add dairy products, cooked pasta and rice, fish or seafood in the last half hour of cooking so they don't overcook. Avoid checking on the meal once it's started cooking. You'll only extend the cooking time if you lift the lid and let the moisture and heat escape.
  • To convert a traditional recipe for a slow cooker, reduce the amount of liquid by half and increase the cooking time. One hour in the oven is equal to about six to eight hours on low in a slow cooker.
  • Slow cookers can also be used for steamed puddings and baked custard. By adding water to the slow cooker bowl, the appliance can be used as a steamer, bain marie or water bath.
  • A slow cooker can also be used to make fondues, preserves, chutneys and stocks.
  • Food can be left unattended to bubble away in the slow cooker for approximately 8 hours if on the low setting. There are slow cookers on the market that have timers which can switch the machine to 'keep warm' at a set time.
  • When cooking on high, keep an eye out for spillage. Condensation forms when the food heats up and, because all the lids are loose-fitting, it can splash out. So put your slow cooker where a few spills won't matter, or keep an eye on it when cooking on high.
  • Increasing the temperature to high at the end of cooking and removing the lid can be useful if the dish requires a reduction in the liquid, thickening with cornflour or you're adding some leafy green vegetables.

Food safety tips

  • Throw away food if there's a prolonged power failure while your meal is cooking, as it may be unsafe to eat.
  • Don't keep food in the slow cooker for too long once it's cooked. It needs to be kept hotter than 60°C (or cooler than 5°C) to avoid harmful bacteria growth. Find out more about putting warm foods in the fridge in our article on how to load a fridge.
  • Don't reheat leftovers in a slow cooker – use a microwave, cooktop or oven instead.
  • Remove strong odours and residue build-up on ceramic bowls with bicarb soda or vinegar diluted in water.
We care about accuracy. See something that's not quite right in this article? Let us know or read more about fact-checking at CHOICE.

Stock images: Getty, unless otherwise stated.