I had a Ninja combined air fryer/toaster oven before this. There were times I wish I could cook two different things without having to turn on my full-size oven and thought this might be the answer. And, well, it kind of is. There are a lot of neat things about this countertop oven, but I think it's limited in order to be compatible with your average household wall outlet. And what I mean about that is, in passing mention, and only a couple times in the manuals, it notes that if you are using both ovens at the same time, cooking times will be increased. To me, that means it has to sacrifice oven temperature in order to be able to power both ovens at the same time, due to the limits of the amount of power it can draw from your wall outlet.Besides that, this oven ... MoreI had a Ninja combined air fryer/toaster oven before this. There were times I wish I could cook two different things without having to turn on my full-size oven and thought this might be the answer. And, well, it kind of is. There are a lot of neat things about this countertop oven, but I think it's limited in order to be compatible with your average household wall outlet. And what I mean about that is, in passing mention, and only a couple times in the manuals, it notes that if you are using both ovens at the same time, cooking times will be increased. To me, that means it has to sacrifice oven temperature in order to be able to power both ovens at the same time, due to the limits of the amount of power it can draw from your wall outlet.Besides that, this oven works pretty well, but the difference between all the heating modes in both ovens is unclear. It's also disappointing that the top oven can't air fry either, even though the size of the oven is roughly the size of my old Ninja airfryer/toaster oven.It took some learning on how to operate the two ovens. The first time I started it, I accidentally started cooking in both ovens, and couldn't figure out how to stop just one. (Hint press and hold the button for the oven you want to turn off). Also, since there are so many cooking modes, it's hard to remember which oven has which function, and you can only see all of the options with both ovens if you power both of them on so both control panels light up. If the bottom oven is completely off, you can't see what cooking options are available.That being said, the manual isn't very clear what the difference between Whole Roast, Air Roast, and Convection Bake are. They just give a couple examples of what types of foods you might use with those functions, without making clear what the oven does differently. Same for pizza... it just says it heats a pizza evenly. But, what if I'm heating up a quesadilla, which of those 4 options should I use?The top oven is a lot more clear, and has all your typical options (toast, bake, bagel) and they all work well. The top oven also pre-heats a lot quicker and is a lot quieter, and it's a lot more straightforward and your basic oven. You can open just the top one by pressing on the button and pulling the handle. If you pull the handle without pushing the bottom, whole door opens to give you access to both ovens.The bottom oven is a little strange and I think will take more getting used to. It does air fry very well, and I've been very happy with anything I've fried in it. But again, the other functions are unclear. All the heat just comes from the right side of the oven via the convection fan. (The top oven has heating elements on the top and bottom.) The top oven also takes a lot more time to preheat (though still quicker than a full-size oven.The thermometer and oven sync works really well, so it does help with taking the guesswork out of when something will be finished cooking, and when you should start cooking the companion dish. So, for those reasons, that makes this oven really neat. But some clarity on the cooking modes would make cooking a little less trial and error as you learn this new oven.

My wife and I share cooking duties and Monday through Friday we always have something going on, so we don't have much time to spend on cooking meals. This Ninja Double stacked countertop oven has really made an impact on that issue for us.To begin with, out of the box you can tell that you have bought a quality item. It is nice and sturdy, but not real heavy. It comes with all the accessories you need to get a meal prepared for your family. Once we decided where it would fit in our kitchen, the stainless steel look really complimented the rest of our appliances.The first couple of days, we started out slow with this oven. Toast and waffles in the morning and reheating some lasagna for dinner and baking some cookies at night. The controls on the side are very ... MoreMy wife and I share cooking duties and Monday through Friday we always have something going on, so we don't have much time to spend on cooking meals. This Ninja Double stacked countertop oven has really made an impact on that issue for us.To begin with, out of the box you can tell that you have bought a quality item. It is nice and sturdy, but not real heavy. It comes with all the accessories you need to get a meal prepared for your family. Once we decided where it would fit in our kitchen, the stainless steel look really complimented the rest of our appliances.The first couple of days, we started out slow with this oven. Toast and waffles in the morning and reheating some lasagna for dinner and baking some cookies at night. The controls on the side are very intuitive, so we didn't have any issues getting our food items just the way we want them. I was really pleasantly surprised how well the oven kept the smells separate. After reheating our lasagna, I was fearful that our cookies would absorb some of the lasagna smell, but that never happened.After the first couple of days, we started to cook full on meals. Our first meal was chicken breasts with asparagus and mashed potatoes. I love that I can put all of these items in at the same time into one appliance and have everything ready and tasting great! The maintenance on this oven is very simply. You take out the sheet pans and the crumb tray and give them a good wash before reusing them again. The following dinner we prepared some salmon with carrots and green peas and the salmon come out with wonderful flavor and the smell did not penetrate the veggies.We can't wait to try out some of the items in the recipe guide and try out some new foods!This Ninja double-stacked countertop oven offers convenience that no other appliance in our kitchen offers. Not only does it cook our food well, it looks really nice in our kitchen. If you are looking to save time on cooking and all have great tasting food coming out of the oven, I highly recommend this Ninja double-stacked countertop oven.

SUMMARY: The Ninja DoubleStack XL Countertop Oven and Air Fryer is a multi-faceted oven that makes you feel like a professional chef when you use it. It not only looks good in your kitchen, but it’s powerful enough that you may find yourself using it more than your primary oven. It’s large enough to cook multiple meals at once and may be particularly useful during the holiday season, which is prime cooking time for most families.DESIGN & SPECIFICATIONS: The Ninja DoubleStack XL comes in stainless steel, which is always a classy look. It looks very sophisticated, professional and luxe for a countertop oven. It’s 13.26 inches tall, 18.6 inches wide, and it weighs 31.26 pounds. It feels sturdy and well crafted.Depending on which version of the Ninja DoubleStack XL ... MoreSUMMARY: The Ninja DoubleStack XL Countertop Oven and Air Fryer is a multi-faceted oven that makes you feel like a professional chef when you use it. It not only looks good in your kitchen, but it’s powerful enough that you may find yourself using it more than your primary oven. It’s large enough to cook multiple meals at once and may be particularly useful during the holiday season, which is prime cooking time for most families.DESIGN & SPECIFICATIONS: The Ninja DoubleStack XL comes in stainless steel, which is always a classy look. It looks very sophisticated, professional and luxe for a countertop oven. It’s 13.26 inches tall, 18.6 inches wide, and it weighs 31.26 pounds. It feels sturdy and well crafted.Depending on which version of the Ninja DoubleStack XL you have, the countertop oven comes with different accessories. I have the version “DCT650,” so mine comes with two wire racks, two sheet pans, one crumb tray, one air basket, and a pro cook thermometer. By comparison, the “DCT600” version comes with a roast tray instead of the thermometer. It is recommended by Ninja to hand wash all the accessories in warm soapy water, then let air dry. This is to keep the finishes on each item from degrading. Ninja offers a variety of accessories on their website should you need to buy more. It is recommended that you only use Ninja approved cooking accessories with the Ninja DoubleStack XL.A big feature of the Ninja DoubleStack XL, as the name implies, is that you can cook multiple meals at once due to being able to use the two ovens independently of each other. Ninja calls it “DualZone technology.” This allows you to cook different meals but have them finish at the same time as a way of minimizing back-to-back cooking and lessens time in the kitchen. You can cook two meals in different ways but still have them finish at the same time. All you have to do is make sure you keep in mind how much time each meal needs and cook accordingly; start the meal that needs slightly more time first in the bottom oven (chicken wings, beef roast, whole chicken), then add the second meal to the top oven that needs less time (veggies, fries), and let the oven take care of the rest. There is a manual included that explains this in detail, but Ninja also has videos you can watch to better explain the technology as well as shows the DualZone technology in use.PROS: The Ninja DoubleStack XL comes with what they call a “Flex door.” This is what allows you to access just the toaster oven part of the oven. It’s a cool way to separate the two ovens. This comes in handy when you are cooking in both ovens at the same time and don’t want to disturb whatever is cooking in the bottom oven.Speaking of cooking two things at once, a big pro of this oven is that the smells won’t crossover. Ninja uses special technology they call “flavorseal technology” to prevent smells of different types of food from crossing between ovens, so your flavor profiles will stay separate. This means if you want to bake chocolate chip cookies or cinnamon rolls in the top oven while roasting lemon garlic butter chicken in the bottom oven, you can without worrying about your desserts smelling like your garlic chicken.Another pro is how fast the Ninja DoubleStack XL works. It preheats quickly and finishes meals quickly. I also like how I don’t have to think too much to use it. Let me explain: I like my bagels and bread on the darker side, and the toaster function finished my toast in less than 4 minutes (I think it’s 3:38 to be more exact). The Ninja DoubleStack XL calculated how much time I needed based on my desired darkness (or shade), so I don’t have to guess how much time I need to toast my bread for it to be perfect or set any cooking times on my own. Once it finishes, it turns the oven off for me. You will hear the fan lingering for a few minutes, but that is it.I like that the Ninja DoubleStack XL comes with a recipe book; specifically, I like that it tells you which oven to cook what type of dish in, what settings to use, and what cooking accessories to use to ensure your meal comes out a success. It’s proper meals too, such as “whole-roasted BBQ chicken with mac & cheese (the mac & cheese goes in the top, and the chicken gets cooked at the bottom), roasted turkey breast with veggies (the turkey is cooked at the bottom, veggies cook up top), and eggplant parmesan with garlic bread (you probably already guessed that the eggplant parmesan cooks at the bottom and the garlic bread cooks up top). The recipe book gives you a better idea how to properly use the Ninja DoubleStack XL to its full potential, and it makes it seem less overwhelming or less intimidating to cook in.Lastly, at least when using the device in air frying mode, the Ninja DoubleStack XL is only moderately noisy, which is important to me. It cooks much quieter on the toasting mode than it does on the air frying mode. It also doesn’t have that constant ticking sound that most standard toaster ovens have that goes on the entire the device is in use.CONS: This thing is HUGE! Unless you do not have any other countertop kitchen appliances, or you purchase a special portable countertop/island to sit it on to add counter space, I do not recommend this appliance for people that have small kitchens or limited counter space. I live in an old condo that is an open floor plan concept, and I have a small kitchen. This takes up a large chunk of counter space, but I am okay with it since I plan to use this more than my full-size oven. I do not recommend this for someone that only wants an air fryer or that only wants a toaster. The size (and price) wouldn’t justify purchasing this only for making toasts and bagels. I strongly recommend measuring the area you intend to put this before ordering, or maybe going to see this in store first and measuring the item itself and your kitchen space.The Ninja DoubleStack XL is also very, very heavy. I live alone and live in a second-level condo, so I had to push/slide this thing up the stairs. If you are elderly or a single woman like me, you might need help getting this into your kitchen. Even on the box it arrived in, it suggests using two people to carry it. This is another reason I suggest checking this item out in person. Just looking at it online and in videos didn’t help me; I mistakenly thought this oven was closer to a traditional toaster oven size. If you’re like me and have zero concept of measurements and dimensions and are a visual person, please check it out in store. Part of the reason this oven is so large is it’s geared towards family meal cooking; it’s for large family meals. If you’re single like me and no someone who often cooks for others, you might not need this specific countertop oven.The wire racks and sheet pans are not dishwasher safe. While I understand cleaning them by hand will protect them from being damaged, if you hate doing dishes like me, you may find this step cumbersome.This is probably just irritating to me (keep in mind that I am a non-cooker) but I hate that I can’t use butter or olive oil as a base in this for risk of increasing smoke emitting from the oven. Ninja recommends using avocado oil, canola oil, refined coconut oil, vegetable oil, or grapeseed oil. Granted, these are all easily accessible and I have a few of these of these in my cupboard right now. Still, I prefer cooking a lot with butter, so this will be a hard habit to break.CONCLUSION: A single person that is not a heavy cooker may not use the Ninja DoubleStack XL to its full potential. I recommend it for a family of four or more. I also recommend it for people like me who eat a lot of toasted foods but are impatient and want to cook their food fast. I also recommend it for single people who have old full-sized ovens that probably need replacing. Using this countertop oven in place of an old full-sized oven will not only be safer, but it will also be more energy-efficient too.