Ninja Crispi Air Fryer Review: Is It Better Than Standard

There’s something oddly satisfying about watching your food crisp up through a glass window as it cooks. The Ninja Crispi tries to bring that pleasure to the air fryer experience by swapping the usual dark drawer for a transparent cooking vessel. Behind that clever design lie some real trade-offs we ought to consider.

Cooking Functions: 4 (Air Fry, Roast, Keep Warm, Recrisp) ·
Max Temperature: 185°C (UK) / 232°C (US) ·
Fat Reduction: Up to 75% less fat ·
Basket Material: Glass ·
Portability: Portable design

The key facts paint a clearer picture of what you get with this glass-basket model.

Is a Ninja Crispi better than an airfryer?

What makes Ninja Crispi different from a standard air fryer?

The Ninja Crispi replaces the traditional non-stick basket with a glass bowl. That change brings visibility — you can watch chips turn golden through the glass — but also a trade-off in temperature control. According to RTINGS, the Crispi lacks manual temperature or fan-speed adjustment. You choose a preset mode (Air Fry, Bake, Recrisp or Max Crisp) and a timer, and the machine decides the heat. Tom’s Guide confirms it has four settings and that the maximum heat on its UK test unit reached about 350°F (177°C).

• Glass basket allows visual monitoring without opening the drawer (RTINGS)
• No temperature dial – presets only (RTINGS)
• Recrisp function claims to revive leftovers (pizza, fries) (Tom’s Guide)
• Portable enough to move from counter to table; 14.5 lbs (Tom’s Guide)

How does the Ninja Crispi performance compare?

RTINGS found the Crispi’s frying performance mediocre: less than half the batch came out crispy and golden brown in their tests. On the plus side, preheating and cooking are notably fast, and the temperature stays stable after food goes in. Tom’s Guide measured maximum noise at 68 dB – quieter than a Ninja Pro 4-in-1 – and praised the Recrisp mode for reviving soggy chips.

Five specs, one pattern: the Crispi prioritises speed and convenience over precision and capacity.

The pattern is clear: the Crispi wins on visibility, noise and cleaning ease, but loses on temperature flexibility, capacity and even crispness. For a single person who hates scrubbing baskets, it makes sense. For a family or a home cook who likes to experiment, a standard air fryer still leads.

Can I use foil in a Ninja Crispi air fryer?

Is foil safe in a glass air fryer?

Official guidance from Ninja advises caution. Foil can obstruct airflow in the glass basket, potentially causing the glass to overheat. A review by Barry Lewis (UK tech reviewer) on YouTube warns that foil should not cover the entire basket base and must be weighed down so it doesn’t touch the heating element. Acidic foods (tomatoes, citrus) should avoid foil contact with glass.

What about parchment paper?

Self confirms parchment paper is safe in air fryers if cut to fit the basket and not blown around. Tom’s Guide adds that parchment liners help with cleanup and are recommended for Ninja Crispi. Avoid foil with acidic ingredients, and always leave space for air circulation.

Choosing parchment over foil eliminates a major safety concern and keeps the glass basket easy to clean.

Why are people getting rid of air fryers?

Common complaints about air fryers

The three biggest gripes across online forums and reviews: hard-to-clean baskets, bulky footprint, and inconsistent cooking. Tom’s Guide notes that non-stick coatings can peel over time, while the glass basket of the Crispi avoids that problem entirely. The compact 4-quart size also fits under kitchen cabinets – a clear advantage for small Irish kitchens.

How the Ninja Crispi addresses these issues

• Glass basket is dishwasher safe (Tom’s Guide) – no peeling coating
• Portable design (11.9 x 13.4 inches footprint) (Tom’s Guide)
• Recrisp mode prevents sogginess (RTINGS)

The irony: the Crispi’s glass basket solves the cleaning complaint but introduces a new one – mediocre frying performance. As RTINGS puts it, “less than half the batch comes out crispy.” That trade-off matters if crispness is your priority.

Are air fryers overrated?

Arguments for and against air fryers

Critics argue that air fryers are limited, single-purpose appliances that take up counter space. RTINGS explains that the Crispi, like many air fryers, cannot dehydrate or proof dough because its minimum temperature sits at 375°F (191°C). On the other hand, using up to 75% less fat than deep frying (Ninja) is a concrete health benefit. The Crispi adds a Recrisp function that standard models lack – one way to fight the “overrated” label by doing more than just frying.

Does the Ninja Crispi change the equation?

The glass basket sets it apart visually and practically. You can see food cooking, and the glass bowl doubles as a serving dish. Tom’s Guide calls it “a fun countertop cooker” but notes it’s not a replacement for a full-size air fryer. Barry Lewis says the UK model reportedly tops out at 185°C while US models reach about 235–240°C – a significant difference that may affect results for Irish buyers.

The Crispi’s novel design can’t overcome the inherent capacity and temperature limitations that fuel the “overrated” criticism – it’s a clever niche product, not a paradigm shift.

What 5 foods should you not put in an air fryer?

Wet batters

Battered foods like fish and chips with wet batter drip through the basket and cause smoke. Tom’s Guide recommends dry coatings for the Crispi.

Leafy greens

Spinach, kale and lettuce leaves blow around the glass basket and can burn unevenly. Parchment paper helps but doesn’t eliminate the risk (Self).

Cheese

Melting cheese sticks to the glass and creates a mess. Use a silicone liner or foil under parchment.

Popcorn

The high fan speed prevents popcorn from popping; kernels may blow into the heating element.

Whole roasts

A whole chicken or large joint won’t fit in the 4-quart glass bowl and won’t cook evenly (RTINGS).

These limitations apply to most air fryers, but the Crispi’s high minimum temperature (375°F) makes it especially unsuitable for sensitive items like cheese or greens. Irish home cooks should stick to frozen chips, chicken wings and reheated pizza for the best results.

Confirmed facts and what’s unclear

“The Ninja Crispi is fast, powerful, and easy to program – but the glass basket means you trade some crispness for visibility.”

– Serious Eats (food and cooking site)

“Ninja describes the Crispi as a portable glass cooking system that can bake, roast and reheat directly in the glass container.”

– Ninja official website

“The UK model reportedly maxes out at 185°C, which is significantly lower than the US version. That matters for browning.”

– Barry Lewis (UK tech reviewer)

“It’s quieter than many air fryers and the Recrisp function is genuinely useful for leftovers.”

– Tom’s Guide

Pros and cons of the Ninja Crispi

Step-by-step: Getting the best from your Ninja Crispi

• Step 1: Place dry, coated food in glass basket – leave space for air.
• Step 2: Choose mode – Air Fry for chips, Recrisp for leftovers, Bake for potato wedges.
• Step 3: Set timer – start with recommended time; check through glass halfway.
• Step 4: Shake basket gently for even cooking – the glass allows you to see progress.
• Step 5: Use parchment liner for easy cleaning – avoid foil with acidic foods.

For reheating rice or making small batches of Mary Berry’s lemon drizzle (baking in glass is possible), the Crispi can handle light meal-prep tasks.

If you frequently cook for one or two and value easy cleanup over pinpoint temperature control, the Ninja Crispi is a reasonable buy at around £99 (UK price). But if you need even, golden-brown chips every time, or you want to dehydrate fruit, a conventional basket air fryer with adjustable temperature remains the better tool. For Irish customers, the lower UK-spec heat is a real limitation – the crispier results reported by US users may not transfer across the Atlantic. Either you accept the glass novelty and the cleaning ease, or you stick with a traditional model that cooks more evenly. The takeaway: the Ninja Crispi offers a clear trade-off – easy cleaning and visibility at the cost of crispness and temperature control.

If you are deciding between compact and space-saving designs, a comparison with the Ninja Double Stack can help you weigh the trade-offs in countertop footprint.

Frequently asked questions