Home » Product Reviews » Small Appliances » Small Cooking Appliances » Slow Cookers & Multi Cookers » Multi Cookers » Ninja Foodi Max 9-in-1 OP500UK 7.5 Litre Multi Cooker With Air Fryer Function review
The Ninja Foodi Max 9-in-1 OP500UK is a large-capacity multi cooker designed to handle everything from midweek one-pot dinners to Sunday roasts and home-made yoghurt. With pressure cooking, air frying, grilling and slow cooking in one unit, it aims to sit on your worktop as a genuine oven alternative.
Ninja has built a strong reputation in the UK for powerful, well-thought-out kitchen appliances, and this model sits at the upper end of the multi cooker market in both size and price. In return, you get serious versatility plus a 7.5-litre pot that’s ideal for bigger households or batch cooking.
Owner feedback is extremely strong, with a 4.9 out of 5 rating from hundreds of reviews, which suggests the Foodi Max largely lives up to the promise of faster, crispier and more convenient home cooking.
The Ninja Foodi Max OP500UK is best suited to families, shared houses and anyone who regularly cooks larger portions. The 7.5-litre total capacity (6 litres liquid) is generous enough for big stews, whole chickens and bulk batches of chilli or curry, so it makes sense if you like to cook once and eat several times.
It’s a strong choice for busy households that want to cut down on oven use and speed up dinner. With pressure cook, air fry, grill, bake and slow cook all built in, you can switch from frozen to table-ready meals quickly, or let a casserole gently simmer away while you get on with other things.
This is a premium, feature-rich multi cooker rather than a budget slow cooker. It will appeal to confident home cooks and gadget fans who want multiple functions in one robust machine. That said, the clear LCD display and straightforward button controls mean first-time multi cooker buyers should still get to grips with it fairly quickly.
If you have a compact kitchen or cook mostly for one, the Foodi Max may feel oversized. In that case, one of Ninja’s smaller-capacity models or a simpler air fryer could be a better fit for both worktop space and budget.
The standout advantage of the Ninja Foodi Max OP500UK is its huge 7.5-litre capacity, which makes cooking for a crowd or batch cooking for the freezer genuinely practical. You can comfortably fit family-sized joints of meat or large one-pot meals without feeling cramped.
Its 9-in-1 functionality is genuinely useful, not just marketing. Pressure cooking dramatically cuts down cooking time, while the Air Fry, Grill, Bake, Roast, Slow Cook, Steam, Dehydrate and Yoghurt settings cover a wide range of everyday and more experimental recipes. This means you can replace several separate appliances with one unit.
Ninja’s TenderCrisp Technology is a real selling point: you can pressure cook to keep meats tender and moist, then switch to air fry or grill in the same pot for a crisp, browned finish. That’s ideal for things like roast chicken or pulled pork where you want both succulence and crunch.
From a practical point of view, the non-stick removable pot, cook and crisp basket and reversible rack are all dishwasher safe, which makes clean-up easy. The auto shut off, keep warm function and clear LCD display with simple button controls also help day-to-day usability.
Finally, the very high owner rating and substantial number of reviews suggest strong reliability and satisfaction, which is reassuring when you’re investing in a premium multi cooker.
The main drawback of the Ninja Foodi Max OP500UK is its size. With dimensions of roughly 35 x 42 x 38 cm and a 7.5-litre pot, it takes up a good chunk of worktop and cupboard space. In smaller kitchens, it may feel dominating or awkward to store.
Price-wise, this is positioned towards the premium end of the multi cooker market. While the feature set largely justifies the cost, it will be overkill if you only need basic slow cooking or the odd air-fried side dish.
There’s no glass lid included, which means you can’t easily see into the pot while slow cooking without lifting the lid and losing heat. Some users might also find the sheer number of functions a bit overwhelming at first, and there is a learning curve to getting the best from all the modes.
Lastly, the 2-year warranty is fairly standard rather than outstanding. It’s perfectly acceptable, but some premium kitchen brands now offer longer cover, so this could be stronger given the investment.
Living with the Ninja Foodi Max OP500UK feels like having a compact second oven with turbo boost. The control panel is button-based with a clear LCD display, so selecting cooking modes, time and temperature is simple once you’re familiar with the layout.
Pressure cooking, steaming and slow cooking all benefit from the generous 6-litre liquid working capacity, which helps prevent boil-overs and gives food space to circulate. Switching from pressure cook to air fry or grill for a crispy finish is seamless, which makes dishes like roast chicken, pork shoulder or jacket potatoes faster and more convenient than using a traditional oven alone.
The non-stick removable pot and cook & crisp basket mean food tends not to cling, and with dishwasher-safe components, clean-up is straightforward after most meals. The reversible rack is handy for layering food or lifting joints and whole chickens away from the base for more even cooking and browning.
On the downside, the unit is bulky and has some heft, so you’ll likely want to give it a permanent spot on the worktop rather than moving it in and out of a cupboard. Once it’s in place, though, the multifunction design and keep warm feature make it easy to incorporate into daily cooking, from quick weekday dinners to slow weekend cooks.
With a 1760W power rating, the Ninja Foodi Max OP500UK heats quickly and has plenty of oomph for both pressure cooking and air frying. The large 7.5-litre capacity (6 litres for liquids) gives you enough room to cook big joints or family stews without crowding, which helps with even results.
Performance-wise, pressure cooking drastically shortens the time for tougher cuts of meat, dried pulses and root veg, while still delivering tender textures. The built-in timer and auto shut off ensure you’re not tied to the cooker the whole time. Once pressure cooking is finished, TenderCrisp Technology lets you switch to Air Fry, Grill or Bake inside the same pot, so you can add crisp skins and caramelised tops without transferring food.
The air fry function uses hot circulating air to crisp chips, wedges, wings and breaded foods with less oil than deep frying. Combined with the cook & crisp basket and non-stick finish, it makes it easy to achieve evenly browned results with minimal turning. The grill and roast functions step in for things like veg trays, sausages and small joints, reducing the need to fire up your main oven.
Beyond the headline modes, the Foodi Max also covers slow cook, steam cooking, dehydrate and a yoghurt setting, giving it genuine all-day versatility. You can slow cook stews, steam veg and fish, dry fruit or make home-made yoghurt without needing extra gadgets. A frozen food setting and keep warm function add convenience, especially for quick dinners and flexible mealtimes.
Overall, the breadth of programmes and thoughtful extras such as dishwasher-safe components and reversible racking put this model towards the top end of the category for features, and help justify its premium positioning.
The Ninja Foodi Max OP500UK sits at a premium price point for a multi cooker, but it earns its keep by combining several high-performing appliances into one. Instead of buying a separate pressure cooker, air fryer, slow cooker and steamer, you get all of those capabilities in a single, well-built unit.
Its very high user rating and large number of reviews suggest that most owners feel they’ve had good value, particularly if they use multiple functions regularly. The combination of a huge 7.5-litre capacity, powerful 1760W heating and features like TenderCrisp, keep warm and dishwasher-safe parts means you’re paying for both performance and convenience.
If you mainly want a small air fryer or a basic slow cooker, you can certainly spend less. But for larger households or keen home cooks looking to reduce oven usage and speed up weeknight meals, the Foodi Max justifies its premium with flexibility, time savings and consistent results.
On balance, it represents strong value for those who will tap into its full range of functions and cook in quantity, while being less compelling for very occasional or small-scale use.
The Ninja Foodi Max 9-in-1 OP500UK is a powerful, feature-packed multi cooker that genuinely earns its space on the worktop. Its combination of pressure cooking, air frying, grilling, baking, roasting, steaming and more makes it a true all-rounder, and the generous 7.5-litre capacity is tailor-made for families and batch cooks.
TenderCrisp Technology is the star of the show, delivering tender centres with crisp finishes in a single pot, while dishwasher-safe components and a clear LCD interface keep everyday use straightforward. Strong owner reviews back up the promise of reliability and solid performance.
It is big, and it is not cheap, so it won’t be the right fit for every kitchen or budget. If you cook mainly for one or two, or only need basic slow cooking, a smaller or simpler model may be wiser. But if you’re after a premium, do-it-all multi cooker that can replace several appliances and seriously speed up family meals, the Ninja Foodi Max OP500UK is an excellent choice.