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Air Fryer Potatoes and Onions

Easy and quick to prep and cook, baby potatoes and sliced onions are cooked in the air fryer for one delicious side dish that can be paired with so many mains.
Air fryer potatoes and onions on a plate with a serving spoon.

Last Updated on May 20, 2024 by Betty Davies

This quick and easy side dish is perfect for your favorite weeknight dinners. Cooked in the air fryer, seasoned potatoes and onions are a versatile side that requires very little work. Baby potatoes are tender and buttery, and the sliced onions are perfectly sweet.

Air fryer potatoes and onions on a serving plate with a spoon.

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If you are looking for a cheap and easy side dish that is crazy easy to make, then these air fryer potatoes and onions tick all the right boxes. Using everyday pantry seasonings, this recipe requires hardly any prep and the cooking time is virtually hands off.

The baby potatoes are roasted til crispy on the outside and tender and buttery in the middle, and the onions get beautifully charred and caramelized for a wonderful flavor.

Ready to serve in less than 30 minutes, this versatile potato side dish is a welcome addition to any dinner.

Be sure to try my Air Fryer Diced Potatoes and Air Fryer Tinned Potatoes too!

Why you will love this recipe!

  • Easy to make: Quickly cut the potatoes in half, slice the onions, toss in oil and seasonings and let the air fryer do all of the hard work.
  • So versatile: This is a great side dish to serve up with so many main dishes. When you don’t know what to serve up with your chicken, fish or meat, these will likely work just wonderfully!
  • Dietary info: These air fryer potatoes and onions are gluten-free, dairy-free and vegan and vegetarian.
Air fried roasted baby potatoes and sliced onions served on a white and grey plate.

Ingredients

  • Potatoes: I love to use baby potatoes in this recipe. They require very little prep, and have a wonderful creamy texture to them.
  • Onion: This recipe uses a large Spanish or yellow onion, they have a milder and sweeter flavor than white onions.
  • Oil: Use a neutral flavored oil with a high smoking point. Avocado, vegetable and canola all work great.
  • Seasonings: Salt, black pepper, garlic powder and paprika.

How to Air Fry Potatoes and Onions

Be sure to scroll down for the full recipe!

  • Cut the potatoes and onions, and mix with the oil and seasonings (photo 1).
  • Place in the air fryer basket (photo 2).
  • Cook til the potatoes are browned, crispy and tender in the middle (photo 3).
Three step by step photos to show how to make the recipe.

Recipe Variations

You can easily adjust the seasonings to suit whatever you are serving this side dish with. Italian seasoning, red chili flakes and other herbs and spice blends can be used.

I love to have my onions slightly charred, if you want yours less done and softer, add them in half way through cooking the potatoes.

Frequently Asked Questions

Can you make this recipe in the oven?

These potatoes and onions come out great in the air fryer and take less time than oven roasting, but you can easily cook them in the oven if you don’t have an air fryer. Roast them at 400F / 200c for around 30 minutes.

Can you use other types of potatoes?

I’ve had the best results with baby potatoes, and other waxy potatoes like reds will work well. Starchy potatoes will also work and will be fluffy rather than creamy. Larger potatoes should be cut into smaller cubes so that they cook through fully.

Do you have to soak the potatoes before air frying?

Because baby potatoes have less starch than Russets or Yukon Golds, there is no need to soak them first. Just give them a wash to remove any loose dirt, cut in half and they are ready to be cooked.

Roasted potatoes and sliced onions served on a white plate.

Serving Suggestions

Air fried potatoes and onions are a great veggie and potato side dish that will work with all kinds of main dishes. Try them with some of these favorites:

Make Ahead, Storage and Reheating

You can season the potatoes and onions up to an hour before you want to cook them. I wouldn’t prep them earlier than that as the potatoes may start to brown.

Once cooked, they will keep well, covered in the fridge, for up to 4 days. You can quickly reheat them in the air fryer at 400F / 200c for 3 to 5 minutes to serve.

Recipe Notes and Tips

  • I prefer to cut the potatoes in half as you get more crispy edges and they are sure to cook through. Smaller potatoes can be left whole if you prefer.
  • I love to have my onions slightly charred, if you want yours less done and softer, add them in half way through cooking the potatoes.
  • Preheat the air fryer before adding the potatoes and onions. If your air fryer doesn’t have a preheat function, let it run at 400F / 200c for 5 minutes while you prep everything.
  • This recipe is easily doubled, but if you do, you will need to shake the basket a few extra times during cooking to make sure that everything is cooked evenly.
Air fried baby potatoes and onions on a plate garnished with fresh parsley.

These air fryer potatoes and onions are a simple but delicious side dish. Quick to prep and cook, they come out perfectly every single time!

More Air Fryer Potato Recipes

If you’ve tried this recipe, be sure to leave a star rating and a comment below!

Air fryer potatoes and onions on a plate with a serving spoon.

Air Fryer Potatoes and Onions

Easy and quick to prep and cook, baby potatoes and sliced onions are cooked in the air fryer for one delicious side dish that can be paired with so many mains.
Print Pin Rate
Course: Side Dish
Cuisine: American
Diet: Gluten Free, Vegan, Vegetarian
Prep Time: 5 minutes
Cook Time: 20 minutes
Total Time: 25 minutes
Servings: 3 servings
Calories: 262kcal
Author: Betty Davies

Equipment

Ingredients

Instructions

  • Preheat the air fryer to 400F / 200c.
  • Cut the potatoes in half and add to a large bowl. Slice the onion and add to the potatoes.
  • Add the oil and seasonings to the bowl and toss well so that the potatoes and onions are evenly coated.
  • Once the air fryer is at temperature, add the seasoned potatoes and onions to the basket. Set to cook at 400F / 200c for 20 minutes.
  • Toss halfway through so that everything cooks evenly. Check for doneness from 17 minutes.

Notes

  • I prefer to cut the potatoes in half as you get more crispy edges and they are sure to cook through. Smaller potatoes can be left whole if you prefer.
  • I love to have my onions slightly charred, if you want yours less done and softer, add them in half way through cooking the potatoes.
  • Preheat the air fryer before adding the potatoes and onions. If your air fryer doesn’t have a preheat function, let it run at 400F / 200c for 5 minutes while you prep everything.
  • This recipe is easily doubled, but if you do, you will need to shake the basket a few extra times during cooking to make sure that everything is cooked evenly.

Nutrition

Calories: 262kcal | Carbohydrates: 31g | Protein: 4g | Fat: 14g | Saturated Fat: 1g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 9g | Trans Fat: 0.1g | Sodium: 205mg | Potassium: 717mg | Fiber: 4g | Sugar: 3g | Vitamin A: 17IU | Vitamin C: 34mg | Calcium: 30mg | Iron: 1mg

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