Ninja Foodi MAX 9-in-1 SmartLid Multi-Cooker (OP350UK) Review: The Ultimate All-in-One Kitchen Appliance?

For home cooks looking to replace multiple appliances with a single, versatile machine, the Ninja Foodi MAX 9-in-1 Multi-Cooker (OP350UK) has become one of Amazon UK’s highest-rated multicookers. Combining pressure cooking, air frying, slow cooking, steaming, baking, roasting, grilling, and more into one appliance, it promises to simplify meal preparation while producing consistently impressive results.

After analysing the recurring themes from Amazon customer reviews and evaluating the multicooker from the perspective of an experienced pressure cooker and air fryer user, it’s easy to understand why so many owners describe it as one of the best kitchen purchases they’ve made. Customers consistently praise its versatility, cooking performance, build quality and time-saving convenience.

First Impressions:

One of the first things customers notice is the appliance’s substantial build quality.

Many reviewers describe the Ninja Foodi as feeling exceptionally solid and well engineered, with a premium finish that immediately distinguishes it from many lower-priced multicookers.

The control panel is clear and logically arranged, while the large cooking pot inspires confidence when preparing family-sized meals.

The most common observation is that the appliance is larger and heavier than expected. However, the overwhelming majority of owners feel this is a worthwhile trade-off considering the number of appliances it effectively replaces.

Many reviewers ultimately choose to leave it permanently on the kitchen worktop because they use it so frequently.

Cooking Functions:

The Ninja Foodi combines multiple cooking methods into a single appliance, including:

• Pressure Cook
• Air Fry
• Slow Cook
• Steam
• Bake
• Roast
• Grill
• Sear/Sauté
• Dehydrate

Rather than simply including these as marketing features, Amazon reviewers consistently report that each function performs extremely well in everyday cooking.

Many customers comment that the Ninja replaces their pressure cooker, slow cooker, air fryer, steamer and even their conventional oven for many meals.

Pressure Cooking Performance:

Pressure cooking is one of the appliance’s biggest strengths.

Customers frequently report preparing meals in a fraction of the time required using traditional methods.

Popular successes mentioned throughout the reviews include:

• Beef stew
• Chilli
• Pulled pork
• Chicken curry
• Bolognese
• Lamb shanks
• Rice dishes
• Soups
• Dried beans
• Stock

Owners consistently praise how tender tougher cuts of meat become after pressure cooking.

From a cooking perspective, the Ninja reaches and maintains pressure efficiently, producing consistently succulent meat while preserving flavour and moisture.

Many reviewers comment that recipes that previously required several hours now take less than an hour.

Air Frying Performance:

The integrated air fryer receives equally enthusiastic praise.

Customers regularly report producing:

• Crispy chips
• Chicken wings
• Roast potatoes
• Fish fingers
• Frozen snacks
• Vegetables
• Pork belly
• Chicken thighs

Foods develop crisp, evenly browned exteriors while remaining moist inside.

Many reviewers specifically mention that the Ninja Foodi performs just as well as dedicated standalone air fryers, making it particularly attractive for kitchens where space is limited.

TenderCrisp Technology:

One of the Ninja’s signature features is TenderCrisp Technology, and it is repeatedly highlighted throughout Amazon reviews.

The appliance allows food to be pressure cooked first to retain moisture before automatically finishing with hot circulating air to create a crisp exterior.

Customers frequently praise this feature when cooking:

• Whole chickens
• Pork joints
• Chicken thighs
• Beef brisket
• Roast potatoes

From a professional cooking perspective, this combination produces results that are difficult to achieve using conventional ovens alone.

It is particularly effective for creating tender meat with beautifully browned skin or crackling.

Searing and Browning:

Another feature customers appreciate is the ability to brown ingredients directly inside the cooking pot before pressure cooking or slow cooking.

Many reviewers enjoy being able to sauté onions, brown mince, or sear meat without transferring food between multiple pans.

This not only develops deeper flavour but also reduces washing up.

Ease of Use:

Despite offering numerous cooking functions, owners consistently describe the Ninja as surprisingly easy to learn.

The digital controls are intuitive, programmes are clearly labelled, and switching between cooking modes is straightforward.

Many reviewers mention feeling confident after preparing only a few meals.

The included recipe guide also receives positive comments for helping new users become familiar with the appliance’s capabilities.

Cleaning:

Cleaning receives consistently favourable feedback.

The non-stick cooking pot, reversible rack, and Cook & Crisp basket are widely praised for being easy to clean.

Many owners report that food residue wipes away easily after soaking briefly in warm water.

Although several removable components are dishwasher safe, experienced users often recommend hand washing to maximise the lifespan of the non-stick coating.

Energy Efficiency:

One of the most common benefits reported by Amazon reviewers is reduced electricity consumption.

Because the Ninja heats rapidly and cooks much faster than a conventional oven, many customers find themselves using their oven far less frequently.

Pressure cooking is particularly energy efficient because cooking times are dramatically shortened while heat remains sealed inside the appliance.

For households preparing regular family meals, this often results in noticeable savings on electricity bills.

Build Quality:

Build quality receives exceptional praise throughout the reviews.

Customers frequently comment on:

• Heavy-duty construction
• Secure pressure lid
• Durable hinges
• Excellent non-stick coating
• Responsive controls
• Premium finish

Many long-term owners report using the appliance several times each week for years without experiencing significant performance issues.

Several reviewers compare its reliability favourably with other leading multicooker brands.

Common Criticisms:

Although customer satisfaction is exceptionally high, several recurring criticisms appear throughout the reviews.

Large footprint:

The most common drawback is its size.

The appliance occupies considerable worktop space and may be difficult to store in smaller kitchens.

Most owners eventually leave it permanently on display because of its frequent use.

Weight:

The Ninja is noticeably heavier than many conventional slow cookers or air fryers.

Users planning to store it in cupboards may find lifting it regularly inconvenient.

Learning curve:

Although generally straightforward, some first-time multicooker users report needing a few cooking sessions to become familiar with pressure release methods and cooking times.

Most reviewers state that confidence develops quickly.

Premium price:

The initial purchase price is higher than many standalone appliances.

However, customers overwhelmingly conclude that replacing multiple kitchen devices makes it excellent long-term value.

Who Should Buy This Multi-Cooker?

The Ninja Foodi MAX is particularly well suited to:

• Families
• Busy professionals
• Home cooks preparing batch meals
• Anyone replacing several separate appliances
• Pressure cooking beginners
• Air fryer enthusiasts wanting additional versatility

It may be less suitable for:

• Very small kitchens
• Users with limited worktop space
• Those wanting only a basic slow cooker

Expert Verdict:

From a cooking perspective, the Ninja Foodi MAX 9-in-1 is one of the most versatile and capable multicookers currently available.

Its ability to pressure cook, air fry, roast, bake, steam, and slow cook to a consistently high standard makes it genuinely useful rather than simply feature-packed.

The recurring themes throughout Amazon customer reviews are remarkably consistent. Owners praise its exceptional cooking performance, versatility, build quality, ease of cleaning, and ability to replace multiple kitchen appliances.

Perhaps its greatest strength is that it encourages people to cook more often. By dramatically reducing cooking times while consistently producing excellent results, the Ninja Foodi transforms complex meals into practical weekday cooking.

Overall Rating:

Category	Score
Pressure Cooking	⭐⭐⭐⭐⭐ (5/5)
Air Frying	⭐⭐⭐⭐⭐ (5/5)
Versatility	⭐⭐⭐⭐⭐ (5/5)
Ease of Use	⭐⭐⭐⭐⭐ (5/5)
Build Quality	⭐⭐⭐⭐⭐ (5/5)
Cleaning	⭐⭐⭐⭐☆ (4.5/5)
Value for Money	⭐⭐⭐⭐⭐ (5/5)

Overall Score: 4.9/5

Conclusion:

For home cooks looking to simplify their kitchen without compromising on cooking performance, the Ninja Foodi MAX 9-in-1 Multi-Cooker is an outstanding investment. Its combination of pressure cooking, air frying, and multi-function versatility delivers consistently excellent results across a huge variety of dishes, making it one of the best all-in-one kitchen appliances available for everyday home cooking.

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