Ninja ON400UK Speedi 10-in-1 Rapid Cooker – Grey

SKU: ON400UK

This product is discontinued and no longer available to purchase.

We regularly check prices against major UK retailers including Argos, Currys, John Lewis and Hughes to stay competitive. If you find the same product cheaper at an authorised UK retailer, we'll do our best to match it. See full details here.

1 year manufacturer warranty

2 year promotional warranty
Registration by Customer Required
More details

Further details can be found on our delivery information page.

Key Features

  • The rapid cooking system combines steam and convection heat to quickly cook complete, 3-part meals in one pot
  • Cook fluffy grains, tender vegetables and juicy, crispy proteins all at once
  • Flip the SmartSwitch to move between Rapid Cooker Mode and Air Fry
  • 10 functions

Perfect meals. One pot. 15 minutes.*

Just because you’re short on time, you don’t have to compromise on delicious, high-quality meals. Quickly make complete, homemade meals that rival your favourite takeaway with the Ninja Speedi Rapid Cooker. Weeknights just got more delicious.

Rapid Cooking System

Rapid Cooker Mode combines steam with convection heat to create fluffy grains or al dente pasta, tender vegetables and crispy mains – all at once.

Steam retains up to 90% of nutrients** and quickly infuses food with moisture. Convection air crisps and caramelises. Simply layer your ingredients in the cooking pot using the adjustable Cook & Crisp Tray.

Transform your favourite ingredients into multi-textured meals in just 15 minutes*. Perfect for quick weeknight dinners, such as fluffy quinoa, roasted peppers and spicy meatballs.

There’s a recipe guide in the box to get you started, and you can also create thousands of custom recipes with the Speedi Meal Builder.

Choose your favourite ingredients and build your own recipe – perfect for creating a delicious meal from ingredients you already have in the cupboard!

This versatile appliance is a one-stop shop for complete meals made up of 3 parts, such as 4 chicken breasts with creamy pasta and tender broccoli florets.

You can also roast a whole 1.6kg chicken, slow cook a veggie chilli, bake a chocolate fudge cake, and so much more.
10 ways to cook

Flip the SmartSwitch to move between Rapid Cooker Mode and Air Fry/Hob Mode.


Speedi Meals

Quickly transform your favourite ingredients into perfectly cooked, multi-textured meals in just 15 minutes.* The Rapid Cooking System combines steam with convection heat for quick, perfectly cooked results. Steam retains up to 90% of nutrients**. Convection heat crisps and caramelises.

Cook a complete meal all in one pot

Cook 3 parts of your meal at the same time. Enjoy endless combinations including al dente pasta with tender broccoli and juicy chicken, teriyaki salmon with fluffy rice and vegetables, butter chicken curry with spinach, and more. You can also roast a whole 1.6kg chicken, slow cook a veggie chilli, bake a chocolate fudge cake, and so much more.


Versatile: 10 ways to cook

Get creative with 10 cooking functions: Speedi Meals, Steam Air Fry, Steam Bake, Steam, Grill, Air Fry, Bake/Roast, Dehydrate, Sear/Sauté and Slow Cook. Use the SmartSwitch to flip between Rapid Cooker mode and Air Fry/Hob mode.

Cook using little to no oil

Up to 75% less fat* using the Air Fry function. Air Frying rapidly circulates hot air to cook and crisp guilt-free fried food, using little to no oil. Perfect for cooking fresh and frozen favourites.


Rapid Cooker Mode:

Speedi Meals: The perfect program for cooking one-pot meals. Build your own Speedi Meal by choosing a base grain and layering it with vegetables, meat or fish, and other flavours – this dedicated pre-set program does the rest.
Steam Air Fry: Steam-infused air quickly cooks ingredients without drying them out. Enjoy guilt-free fried food that’s moist and juicy on the inside, and crispy on the outside – from vegetables to fresh or frozen foods like salmon fillets.
Steam Bake: Create fluffy cakes and bakery-style bread at home, from garlic bread knots to cookie cheesecake, or savoury dishes like baked vegetable gratin.
Steam: Cook everything from vibrant vegetables and flaky fish to steamed dumplings.

Air Fry/Hob Mode:

Air Fry: Rapidly circulates hot air for crispy fried food using little or no oil – up to 75% less fat than traditional frying methods.*** Enjoy everything from salmon fillets and sweet potato wedges to chicken wings and mozzarella sticks.
Grill: High heat from above caramelises the top of your food to perfection. Perfect for marinated chicken breasts, grilled aubergine or halloumi skewers.
Bake/Roast: Use the Ninja Speedi like an oven for tender meats, baked treats and more – from fluffy chocolate fudge cake to spiced vegetable pie, roast chicken thighs to baked cheesecake.
Dehydrate: Gently dry ingredients using low heat to create homemade snacks, from beef jerky to dried fruit, vegetable crisps and cocktail garnishes.
Sear/Sauté: Use heat from underneath to cook as you would on the hob – think chilli, risotto, curry and more. Perfect for browning meats, sautéing vegetables and simmering sauces – whether you’re searing braising steak to perfection before slow cooking, or caramelising onions to give a maximum sauce flavour.
Slow Cook: Slowly cook food at a lower temperature for tender results – perfect for pulled pork, veggie chilli and more.

Easy to use and clean

Perfect for cooking up to 4 portions, fast. The 5.7L non-stick, ceramic coated Cooking Pot fits a 2kg roast. Use the Cook & Crisp Tray to layer ingredients in the pot for multi-level cooking, then store them inside the pot for fuss-free storage. All the included accessories are dishwasher-safe for easy cleaning. You can also use the Steam setting to steam-clean the inside of the lid and unit.

*Excludes pre-heat time.
**3rd party laboratory tested with steam setting on broccoli, bell pepper, mangetout for vitamin C, salmon for omega3/6, beef for iron.
***Tested against deep-fried, hand-cut French fries. 

Brand Name Ninja
Manufacturer Ninja
Colour Grey
Weight (Approximate) 7.29kg
Height 31.0cm
Width 33.0cm
Depth 35.0cm
Key Features Perfect meals. One pot. 15 minutes.* (*Excludes pre-heat time.) Rapid Cooking System combines steam and convection heat to cook complete, 3-part meals in one pot quickly Cook fluffy grains, tender vegetables and juicy, crispy proteins all at once 10 functions: Speedi Meals, Steam Air Fry, Steam Bake, Steam, Grill, Air Fry, Bake/Roast, Dehydrate, Sear/Sauté, Slow Cook
Product Type Multi Cooker
Functions Speedi Meals - 200˚C to 240˚C, Steam Air Fry - 200˚C to 240˚C, Steam Bake - 120˚C to 210˚C, Grill - 210˚C to 240˚C, Air Fry - 150˚C to 210˚C, Bake/Roast - 120˚C to 210˚C, Sear/Saute - "Lo1" "2" "3" "4" or "Hi5", Dehydrate - 40˚C and 90˚C, Slow Cook - "Hi" "Lo", Steam - No temp
Shipping Height 40.0cm
Shipping Width 43.0cm
Shipping Depth 43.0cm
Additional Information Rapid Cooking System: Steam quickly infuses food with moisture while convection air crisps and caramelises Speedi Meals: Transform your favourite ingredients into multi-textured meals in just 15 minutes* (*Excludes pre-heat time.) Create thousands of custom recipes with the Speedi Meal Builder site Flip the SmartSwitch to move between Rapid Cooker Mode and Air Fry/Hob Mode Air Fry: up to 75% less fat than traditional frying methods** (**Tested against deep-fried, hand-cut French fries.) Quickly cooks up to 4 portions Includes non-stick, dishwasher-safe 5.7L Cooking Pot & Cook & Crisp Tray Includes Recipe Guide
Capacity 5.7l
Package Contents 1x Cook & Crisp tray, 1x 5.7L Removable Cooking Pot, 1x Lid Handle, 1x Cooker Lid, 1x Heating Element, 1x Control Panel, 1x Cooker Base, 1x Smart Switch, 1x Air Outlet Vent, 1x Condensation Collector

We offer FREE standard delivery on most orders over £100.

  • Orders under £100: Standard UK mainland delivery is £4.99. Delivery charges for postcodes outside the UK mainland are calculated at checkout.
  • Small appliances: Delivered by DHL or Royal Mail.
  • Large appliances: Delivered free on orders over £400. Orders under £400 incur a £19.95 delivery charge. Installation services can be added during checkout.
  • Next Day Delivery: Selected products are available for Next Day Delivery. Where available, this option can be selected during checkout.
  • Delivery area: We are currently unable to deliver some large appliances outside Norfolk and North Suffolk. If your postcode falls outside our delivery area, we'll let you know during checkout.

We aim to dispatch in-stock orders within 2 working days of receiving them. Once your order has been processed, you'll receive an email confirming your estimated delivery date.

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All installations are carried out by our own experienced engineers. We'll install your new appliance, remove the packaging and connect it where appropriate (excluding gas appliances).

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