Air Fryer Peppers and Onions

Bell peppers are always extra good in the fall, and Air Fryer Peppers and Onions are really a wow for an extra-easy side dish! Check the oven directions if you don’t have an Air Fryer.

PIN Air Fryer Peppers and Onions to try it later!

This new recipe for Air Fryer Peppers and Onions is so easy and good that it might end up being one of your favorite side dishes! I know some people aren’t bell pepper fans, but I love grilled peppers, roasted peppers, and stuffed peppers, so I had no doubt that I’d love peppers and onions cooked in the Air Fryer. And when I tested this recipe with Kara, we both thought it was completely a wow!

And if you don’t take time to marinate (which is completely optional) you can make the entire recipe including cutting up the veggies in about 20 minutes, which is also pretty great!

This is another one of those recipes where I thought my favorite Newman’s Own Classic Oil and Vinegar Dressing gave it just an extra touch of flavor! Check instructions for roasting this in the oven if you don’t have an Air Fryer, and I hope you’ll give this a try if you’re also a fan of peppers.

What ingredients do you need for this recipe?

(This is only a list of ingredients; please scroll down for complete printable recipe. Or if you use the JUMP TO RECIPE link at the top of the page, it will take you directly to the complete recipe.)

• red bell pepper
• yellow bell pepper 
• yellow onion
• Newman’s Own Classic Oil and Vinegar Dressing (affiliate link) or another low-sugar vinaigrette
• Italian Herb Seasoning (affiliate link)
• salt and fresh-ground black pepper to taste

Can you make Air Fryer Peppers and Onions with one color of peppers?

You don’t have to buy both red and yellow peppers to make this recipe, and you can definitely use less-expensive green peppers if that what you prefer or what you find at the store.

What Air Fryer Did I use for the peppers and onions?

I became a big Air Fryer fan after I discovered the Cuisinart Convection Air Fryer Toaster Oven (affiliate link) which is what I used for this recipe. This air fryer has a larger basket, which was big enough to do three large peppers and a large onion but if your Air Fryer has a smaller basket you might need to cut the recipe in half.

Are you an Air Fryer fan?

Use Air Fryer Recipes to see the all the recipes on my site where I’ve used the Air Fryer. Or check out my round-up of 100 Keto Air Fryer Recipes with tasty recipes from blogs around the web!

What if you don’t have an Air Fryer?

You can definitely cook this side dish of sausage and peppers in the oven if you don’t have an air fryer. I would cook them at 450F/230C. Follow directions for preparing the vegetables and tossing with the seasonings, then drain them spread the vegetables out on a large baking sheet. The Air Fryer cooks hotter like a convection oven, so they will take a bit longer in the oven even if the temperature is higher. I’d start to check the oven-roasted peppers and onions after 10 minutes, and they’ll probably take about 15 minutes, depending on how crisp you like them.

Tips for making Air Fryer Peppers and Onions:

(This is only a summary of the steps for the recipe; please scroll down for complete printable recipe. Or if you use the JUMP TO RECIPE link at the top of the page, it will take you directly to the complete recipe.)

1. Cut ends of bell peppers, remove seeds and membranes, and cut peppers into strips.
2. Peel onion and cut into slivers about the same size as the peppers.
3. Put onions and peppers into Ziploc bag (or a bowl) and toss with Newman’s Own Classic Oil and Vinegar Dressing and Italian Herb Seasoning.
4. Let veggies marinate a bit if you have time, or drain right away in a colander placed in the sink.
5. Set Air Fryer to 400F/205 C. Preheat if your Air Fryer needs it.
6. Arrange veggies in the air fryer basket.
7. Cook 4-5 minutes, then stir.
8. Then cook 3-4 minutes longer, or until done to your liking.
9. We liked the peppers and onions when they were still slightly crisp, so adjust the cooking time depending on how soft you like them.
10. Season to taste with salt and fresh-ground black pepper and serve hot. 

Make it a Low-Carb Meal:

The Air Fryer Peppers and Onions would make an amazing side dish option to serve with something like Pork Tenderloin with Mustard Sauce, Beef and Sausage Meatballs with Tomato Sauce, Chicken Cutlets with Mustard Sauce, Maple Glazed Salmon, or Instant Pot Hungarian Pot Roast.

More Vegetables in the Air Fryer:

• Air Fryer Turnip Fries
• Air Fryer Artichoke Hearts
• Air Fryer Asian Green Beans
• Air Fryer Asparagus with Lemon and Parmesan
• Air Fryer Sweet Potato Fries

Continue to Content

Print

Yield: 6 servings

Air Fryer Peppers and Onions

Prep Time 10 minutes

Cook Time 8 minutes

Total Time 18 minutes

Ingredients

• 2 large red bell peppers
• 1 large yellow bell pepper (or use any colors you prefer)
• 1 large yellow onion
• 1/4 cup Newman's Own Classic Oil and Vinegar Dressing (or other low-sugar vinaigrette)
• 1 tsp. Italian Herb Seasoning
• salt and fresh-ground black pepper to taste

Instructions

1. Cut ends of bell peppers, remove seeds and membranes, and cut peppers into strips. We made strips just over 1/2 inch wide and tried to make them all close to the same size.
2. Peel onion, cut ends off, and cut into slivers about the same size as the peppers.
3. Put onions and peppers into a Ziploc bag or a bowl and toss with Newman's Own Classic Oil and Vinegar Dressing and Italian Herb Seasoning.
4. Let veggies marinate a bit if you have time, even 30 minutes will add some flavor. But you can also drain right away in a colander placed in the sink.
5. Arrange veggies in the air fryer basket, trying to get them in one layer as much as possible.
6. Set Air Fryer to 400F/205 C. Preheat if your Air Fryer needs it.
7. Cook 4-5 minutes, then stir the peppers and onions and spread them out again.
8. Then cook 3-4 minutes longer, or until done to your liking.
9. We liked the peppers and onions when they were still slightly crisp, so adjust the cooking time depending on how soft you like them.
10. Season to taste with salt and fresh-ground black pepper and serve hot.
11. TO COOK PEPPERS AND ONIONS IN THE OVEN: Preheat oven to 450F/230C. Follow directions for preparing vegetables and tossing with seasonings, then spread vegetables out on a large baking sheet. I'd start to check the oven-roasted peppers and onions after 10 minutes, and they'll probably take about 15 minutes, depending on how crisp you like them.

Notes

I use the Cuisinart Convection Air Fryer Toaster Oven (affiliate link) for all my Air Fryer recipes. If you have an air fryer with a smaller basket you may need to cut this recipe in half.

Nutrition Information:

Yield:

6

Serving Size:

1
Amount Per Serving: Calories: 207Total Fat: 18gSaturated Fat: 3gTrans Fat: 0gUnsaturated Fat: 15gCholesterol: 0mgSodium: 168mgCarbohydrates: 11gFiber: 1.2gSugar: 5.9gProtein: 1.1g

Nutrition information is automatically calculated by the Recipe Plug-In I am using. I am not a nutritionist and cannot guarantee 100% accuracy, since many variables affect those calculations.

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Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
Air Fryer Peppers and Onions are a good side dish for most low-carb diets, although they might be a bit of a splurge for Keto. They’re great for any phase of the original South Beach Diet.

Find More Recipes Like This One:
Use Air Fryer Recipes to find more recipes like this one. Use the Diet Type Index to find recipes suitable for a specific eating plan. You might also like to follow Danica's Kitchen on Pinterest, on Facebook, on Instagram, on TikTok, or on YouTube to see all the good recipes I’m sharing there.

Historical Notes for this Recipe:
The recipe for peppers and onions in the Air Fryer was first posted in 2021. It was last updated with more information in 2023.

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