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The first time I seriously looked at the Ninja Crispi Glass Air Fryer wasn’t for a review, but because my wife asked if we could finally ditch our plastic-lined basket model. We wanted to see our food crisp up without guessing, and we were tired of wondering what was in the coating on our old non-stick surfaces.
After digging through the specs, cross-referencing hundreds of verified buyer reports, and comparing it against the current air fryer landscape, the bottom line is this: it is a brilliant choice if you prioritize visibility and a PFAS-free cooking surface. It is a compromise if you absolutely need a single, cavernous basket for feeding a crowd. Let’s break down exactly what makes this glass air fryer different, and whether it belongs on your countertop.
What it is
The Ninja Crispi Glass Air Fryer is a 4-in-1 countertop convection oven that air fries, max crisps, bakes, and recrisps leftovers. The headline feature is the construction: the main cooking vessel and the crisper plate are made of glass that is explicitly free of PFAS (Per- and polyfluoroalkyl substances) and synthetic non-stick chemicals. You get a 4 Qt capacity in the main glass container and a separate 6 Cup glass container for smaller sides or baking.
It directly competes with the oven-style aesthetic of models from brands like Philips and Cuisinart, but it carves out its lane by focusing on material safety and transparency. While 450F max temperatures are becoming standard, the Ninja Crispi has a clear visual advantage over the drawer-style designs from Instant Pot and Gourmia. It positions itself as the air fryer for the health-conscious cook who refuses to compromise on visibility.
Setup & first impressions
Unboxing reports from verified buyers consistently highlight how heavy the glass components feel compared to standard coated baskets. The main glass container has a solid, premium heft that signals durability, but it also means you need to be careful when handling it with wet hands. Assembly is straightforward: you place the perforated glass crisper plate inside the glass container, drop it into the base unit, and close the glass lid.
The first thing that strikes almost every user is the 360-degree visibility. You can watch your food go through the entire Maillard reaction without opening anything. The control panel on the base uses simple buttons and a clear display, which older users in the review pool found intuitive.
Many reviews describe wiping down the glass after the first cook and realizing that cleanup is genuinely easier than scrubbing a coated basket because food residue doesn’t bond to the surface.
Key specifications
| Model | Ninja Crispi FN101SG |
| Cooking Functions | Max Crisp, Air Fry, Bake, ReCrisp |
| Maximum Temperature | 450°F |
| Capacity | 4 Qt main container + 6 Cup secondary container |
| Material | PFAS-free glass (containers and crisper plate) |
| Power | 1500 Watts |
| Visibility | 360-degree glass viewing |
Daily-use experience
Watching the cook (Transparency)
The defining feature is the transparent glass shell. Initially, many of us thought this was just a novelty, but it changes how you cook. You can see the exact moment the crust forms on fried chicken or when the cheese on a bake starts to bubble.
This visibility means you are not tempted to open the lid every few minutes to “check.” Losing heat is the number one reason for subpar crispy results in standard air fryers. Reviewers on Amazon frequently mention that the Max Crisp setting achieves a golden texture that rivals their old basket models, specifically because they could finally leave it alone and trust the visual cues.
Handling the glass
This is the trade-off you must accept. The glass crisper plate is not light. A significant number of aggregate user reviews mention being cautious when pulling the hot container out to shake or toss food.
You need to use silicone tongs or a wooden spoon to toss the food, as the glass plate will scratch if you use metal utensils, which is less of a concern with standard coated metal baskets. The glass does retain heat well, so the food stays hot on the table, but the unit itself stays warm to the touch long after cooking. The 450°F max temperature means you have to be careful about placing it on a trivet that can handle high heat.
Split cooking capacity
The 4 Qt and 6 Cup containers feel logical on paper, but they have a learning curve in practice. If you are reheating a single serving of fries, the 4 Qt container feels large. If you are cooking a full meal for two, you will often find yourself using both containers.
The workflow is straightforward: you can put the main dish in the large container and the side dish in the smaller one. A word of caution from verified feedback: the smaller 6 Cup container cooks faster than the 4 Qt one because of the different air circulation volume. You will want to check the smaller container a few minutes earlier than the main one to avoid over-browning.
Cleanup and maintenance
This is where the Crispi wins outright. The PFAS-free glass surfaces clean up like a glass baking dish. Baked-on grease does not require steel wool or a soak.
A quick wash with warm soapy water and a sponge removes most residue.
Because the glass is dishwasher safe, you can just drop the components in the top rack. The base unit, however, needs a quick wipe down with a damp cloth. Make sure the glass is completely cool before washing.
Pouring cold water on hot glass is an obvious risk, and several users have noted the glass is durable but not invincible to thermal shock if you are careless.
Pros and Cons
✓ Pros
- True 360-degree visibility lets you monitor browning precisely, eliminating the guesswork that leads to undercooked food.
- PFAS-free glass construction removes the worry about chemical coatings breaking down over time.
- Reaches 450°F quickly, which delivers a crispy exterior on frozen foods that rivals deep frying.
- The glass containers are top-rack dishwasher safe, making cleanup noticeably easier than scrubbing coated baskets.
- Dual container design (4 Qt + 6 Cup) allows for cooking a main dish and a side simultaneously at different temperatures if needed.
✗ Cons
- The glass components are heavy, which can be awkward for shaking food or cleaning if you have limited wrist strength.
- The split capacity (4 Qt + 6 Cup) is not ideal for large families; it lacks a single large basket for a whole chicken.
- It takes up significant countertop space, and the footprint is larger than a standard 4-6 Qt basket model.
- Food with high moisture content can cause condensation to build up on the glass lid, slightly obscuring the view during the first few minutes.
Score breakdown
Who should buy it
Buy it if you…
You are a couple or a small family that cooks at home most nights. You appreciate the ability to watch your air fryer work without opening it, especially if you are learning how different foods brown. You prioritize using cookware that is explicitly free of traditional non-stick coatings.
You will use the two glass containers as frequently for baking small portions, like cookies or a personal cobbler, as you will for air frying. If you have a history of intuitively burning food in standard ovens, the visual feedback here is a genuine game-changer.
Skip it if you…
You typically cook for four or more people and rely on your air fryer to handle a large batch of wings in a single layer. The 4 Qt main container will require you to cook in batches, which offsets the speed advantage. You also might want to pass if you have limited storage space or if your cabinets are above shoulder height, as lifting a hot glass container down can be awkward.
If you prefer the “set it and forget it” nature of a digital basket fryer with more presets, the Crispi’s simpler control panel might feel limiting.
Better alternatives
If you have a larger family, the Instant Pot Vortex Plus 6 Qt is a better value for big batches. It has a traditional non-stick basket, but the larger capacity is worth the trade-off. For those who want the air fryer to double as a full countertop oven, the Cuisinart TOA-70 offers a wider range of cooking modes and a bigger interior, though it takes up even more counter real estate and is notoriously harder to clean.
The Ninja Crispi is the best pick for the material-conscious cook, not for maximum volume.
Frequently Asked Questions (FAQ)
Does the glass really not have any non-stick coating?
Correct. The manufacturer specifies that both the glass cooking container and the glass crisper plate are free of PFAS and synthetic non-stick chemicals. The glass is structurally non-stick because of its smooth, non-porous surface.
You still need a small amount of oil to get a golden crust on foods like potatoes, just as you would with any air fryer.
Is the Ninja Crispi loud during operation?
Aggregate user feedback places it in the normal range for a convection air fryer, around 50-55 dB. It is quieter than a microwave and significantly quieter than a high-speed Philips model. You can have a conversation over it, but you will notice the fan running throughout the cook cycle.
Why is the temperature so high at 450°F?
Most traditional air fryers top out at 400°F. The higher 450°F ceiling is designed to maximize the Maillard reaction, which is the chemical process that creates complex, savory flavors and browning. This setting is particularly effective for recrisping leftovers, which often fail in standard ovens.
How do I clean the glass if food burns onto it?
Let it cool completely, then fill the container with warm water and a few drops of dish soap. Let it soak for 15 minutes. A non-abrasive sponge will lift the residue without scratching the glass.
Avoid using oven cleaner or steel wool, as they will damage the surface.
Can I use it to bake, or is it just an air fryer?
You can bake. The “Bake” function uses the convection fan at a lower temperature, which is excellent for small cakes, muffins, or roasting vegetables. The 6 Cup container works well for personal pizzas or cornbread.
It is not a replacement for a full-size oven for large sheet-pan bakes, but it handles small-batch baking without preheating.
Final verdict
Giving the Ninja Crispi Glass Air Fryer a solid 4.5 out of 5 stars feels right. It loses half a star for the awkward split-capacity design and the heavy glass weight, but it earns high marks for its safety-forward material and unmatched cooking visibility. People who prioritize cookware materials and those who delight in watching food transform will love it.
It will not solve the “cooking for a crowd” problem, but for everyday use for one to three people, it is a standout performer.
Affiliate disclosure: This post contains affiliate links. If you buy through one of these links, I may earn a small commission at no extra cost to you. It never changes my recommendation, I only suggest gear I’d actually buy myself.
