The Ninja Foodi 11-in-1 SmartLid OL550UK is a 6-litre multi cooker that rolls pressure cooking, slow cooking, air frying, steaming and baking into one chunky countertop unit. It’s designed to replace several appliances at once and make midweek dinners much quicker.
Ninja has a strong reputation in the UK for well-thought-out, powerful small appliances, and this model follows that pattern. With 13 automatic cooking programmes and the clever SmartLid slider to switch modes, it aims to be as simple as turning a dial and pressing start.
Owner feedback is excellent: an average rating of 4.8 out of 5 from well over three thousand reviews suggests this cooker doesn’t just look good on paper – it’s genuinely delivering in everyday kitchens.
The 6-litre capacity makes the OL550UK ideal for couples and families who regularly cook for three to five people. It’s a good size for batch cooking stews, curries and bolognese, or roasting a chicken with vegetables in one go, without being so huge it dominates the worktop in a smaller kitchen.
If you’re looking to slim down the number of gadgets you own, this is a strong option. With air fry, grill, pressure cook, slow cook, steam and bake functions in one, it can realistically replace a separate slow cooker, air fryer and perhaps even your regular oven for many meals. That makes it particularly appealing for flats, student houses and anyone short on space.
The price sits in the mid-to-upper bracket for multi cookers, so it suits buyers who are happy to pay a bit more for versatility and speed rather than those after the cheapest possible option. In return, you’re getting 13 auto programmes, a clear display and a simple rotary control, so it’s friendly enough for first-time multi cooker users as well as more confident home cooks.
If you love experimenting – baking bread, proving dough, making yoghurt or dehydrating fruit – the extra specialist settings will appeal. If you just want the odd stew and don’t care about air frying, this may be more machine (and more spend) than you really need.
The 6-litre pot is a very practical size, large enough for family meals and batch cooking but still reasonable for smaller households who like to cook once and eat twice. It strikes a good balance between capacity and footprint.
The combination of pressure cook, slow cook, air fry, grill, steam and bake in one unit is genuinely useful. You can brown, pressure cook and crisp up a dish without moving food between pans or gadgets, which makes one-pot meals fast and convenient.
Air frying with hot air rather than deep oil gives you crisp chips, chicken wings and roast potatoes with far less fat. For many households this can significantly cut down on oven usage and cooking time, especially for weeknight dinners.
Thirteen automatic cooking programmes and an easy-to-read display make it straightforward to get started. You don’t need to be an expert – choose the setting (like steam bake, yoghurt or dehydrate), set the time and let it get on with it.
Cleaning is helped by the non-stick finish and dishwasher-safe components, so the pot and accessories are simple to wash up after a sticky stew or bake. Features like the keep warm function and non-slip feet round out the sense of a well-thought-through, everyday cooker.
A two-year manufacturer warranty, once registered, gives a decent level of reassurance for a regularly used kitchen appliance.
This is a fairly bulky appliance at roughly 41 x 39 x 40 cm, so it will take up a good chunk of worktop or cupboard space. In compact kitchens you’ll want to be sure you have a permanent spot for it, as it’s not something you’ll want to move in and out every day.
At 1460 watts it’s powerful enough, but not dramatically higher than many standard air fryers or multi cookers, so the wow factor comes more from versatility than from raw power. If you only want a simple pressure cooker or air fryer, there are cheaper, more basic models that may suit better.
The SmartLid and 11-in-1 functionality inevitably mean a learning curve. While the controls are simple, new users may take a little time to get fully comfortable switching between pressure cooking, steaming and air frying in the same unit.
The 80 cm power cable is on the short side, which limits where you can safely position it on the counter, especially if your sockets are tucked away.
Living with the Ninja Foodi OL550UK feels a lot like having a compact extra oven and hob on the counter. The SmartLid slider and rotary control make it easy to flip between pressure cooking, steaming and air frying – you don’t have to juggle multiple lids or accessories, which keeps things tidy and less intimidating.
Day to day, you’re likely to appreciate the keep warm function as much as the headline cooking modes. It means curries, chillies or stews can sit ready to serve without drying out, handy when family members eat at different times. The reheat setting is also useful for reviving leftovers without blasting them in a microwave.
The non-stick pot and dishwasher-safe components take the sting out of clean-up. Sticky sauces and baked-on bits are less likely to cling, and being able to put parts straight in the dishwasher makes it realistic to use several times a week without it becoming a chore.
Physically, it’s a solid, weighty unit with non-slip feet and an integrated handle to help move it, but you still won’t want to lug it in and out of cupboards daily. Ideally, it lives on the worktop. Once in place, the straightforward display and clear programme labelling mean it quickly becomes a go-to for quick weeknight meals.
At its core, the OL550UK is built around a 1460-watt heating system and a 6-litre non-stick cooking pot. That combination gives you enough power and space to cook dense one-pot dishes, pressure cook joints of meat or roast a whole chicken with veg without the cooker feeling underpowered.
Pressure cooking dramatically cuts down cooking times for stews, curries and tougher cuts of meat, while the slow cook option is there for when you want deeper flavour and a more traditional approach. Being able to sauté and sear directly in the pot first means you can brown meat and soften onions in the same vessel you’ll serve from – no extra pans required.
The air fry and grill modes handle everything from chips and crispy chicken to grilled veg and finishing a cheese-topped bake. Steam air fry and steam bake take that further by combining moisture and hot air, which helps keep meats juicy and baked goods lighter, while still giving you a browned, crisp finish on the outside.
Beyond the headline cooking methods, the OL550UK includes several enthusiast-friendly extras: dough proving, a dedicated bake function, dehydrate and a yoghurt setting. These open up homemade bread, pizza dough, fruit leathers and yoghurt without extra gadgets or guesswork. The 13 automatic programmes do much of the temperature and time management for you, so you can branch out without constantly watching the clock.
Practical touches such as dishwasher-safe components, a reheat function, non-slip feet and an integrated handle mean the feature list isn’t just long for the sake of it – most of what’s included adds something tangible to everyday cooking.
At around £177, the Ninja Foodi OL550UK sits in the mid-to-upper price range for multi cookers, but its specification easily justifies that positioning. You’re not paying for a single-purpose gadget; you’re investing in an 11-in-1 workhorse that can take over duties from your slow cooker, air fryer and, for many meals, even your main oven.
The strong owner rating of 4.8 out of 5 from over 3,000 reviews suggests that most buyers feel they’ve had good value from it, both in terms of performance and reliability. When you factor in the range of programmes, the SmartLid convenience and the quality feel associated with Ninja, the price looks fair rather than inflated.
If you only need a basic slow cooker or air fryer, this will seem expensive compared with entry-level models. But for households that will regularly use multiple modes – pressure cook, air fry, steam, bake and more – the OL550UK offers very solid value for money, particularly if it allows you to declutter a couple of older appliances.
The Ninja Foodi 11-in-1 SmartLid OL550UK is a highly capable, genuinely versatile multi cooker that earns its place on the worktop. Its 6-litre capacity, range of cooking modes and smart lid design make it ideal for busy households that want quick, tasty meals with less faff and fewer gadgets.
It’s not the smallest or cheapest option, and there is a little learning curve while you get used to the different programmes. But once you’ve found your favourites, the combination of pressure cooking, air frying, steaming and baking in one unit is hard to beat for convenience.
If you’re after a single appliance that can handle everything from slow-cooked stews and Sunday roasts to crispy chips, homemade bread and yoghurt, this Ninja Foodi is an excellent choice. If your needs are very simple, a budget cooker may be enough, but for most family kitchens the OL550UK’s blend of performance, features and owner satisfaction makes it a standout all-rounder.
