These Air Fryer Bell Peppers and Onions are colorful, tender-crisp, and packed with flavor. Ready in just minutes, they’re the perfect side dish for fajitas, burgers, sandwiches, rice bowls, steaks, chicken, or sausages.

Recipe Overview

Ingredients

Vegetables

• 2 large bell peppers (any colors), sliced
• 1 large onion, sliced

Seasoning

• 1 tablespoon olive oil
• 1 teaspoon garlic powder
• ½ teaspoon paprika
• ½ teaspoon Italian seasoning
• ½ teaspoon salt
• ¼ teaspoon black pepper

Optional Garnish

• Fresh parsley
• Red pepper flakes
• Grated Parmesan cheese

Equipment Needed

• Air fryer
• Large mixing bowl
• Measuring spoons
• Tongs

Instructions

Step 1: Prepare the Vegetables

Wash and dry the peppers.

Remove the seeds and slice into thin strips.

Slice the onion into similar-sized strips.

Step 2: Season

Place peppers and onions in a large bowl.

Add:

• Olive oil
• Garlic powder
• Paprika
• Italian seasoning
• Salt
• Black pepper

Toss until evenly coated.

Step 3: Preheat Air Fryer

Preheat the air fryer to 380°F (193°C) for 3 minutes.

Step 4: Air Fry

Place the vegetables in the air fryer basket in an even layer.

Cook at 380°F (193°C) for 10–12 minutes.

Shake the basket halfway through cooking.

For softer vegetables, cook an additional 2–3 minutes.

Step 5: Serve

Transfer to a serving dish.

Garnish with:

• Fresh parsley
• Parmesan cheese
• Red pepper flakes

Serve warm.

Tips for Perfect Air Fryer Peppers and Onions

Slice Evenly

Uniform slices ensure even cooking.

Don’t Overcrowd

Cook in batches if necessary.

Shake Halfway

This helps achieve even browning.

Adjust Texture

Cook less for crisp-tender vegetables or longer for caramelized vegetables.

Flavor Variations

Fajita Style

Add:

• 1 teaspoon chili powder
• ½ teaspoon cumin

Perfect for tacos and fajitas.

Garlic Parmesan

Toss with:

• ¼ cup grated Parmesan cheese

after cooking.

Cajun Peppers and Onions

Replace seasonings with:

• 1 tablespoon Cajun seasoning

Mediterranean Style

Add:

• Oregano
• Feta cheese
• Kalamata olives

after cooking.

Spicy Version

Add:

• Cayenne pepper
• Crushed red pepper flakes

What to Serve With

Main Dishes

• Grilled chicken
• Steak
• Pork chops
• Sausages

Sandwiches

• Cheesesteaks
• Burgers
• Wraps

Mexican Favorites

• Tacos
• Fajitas
• Burrito bowls

Storage Instructions

Refrigerator

Store in an airtight container for up to 4 days.

Freezer

Freeze for up to 2 months.

Reheating

Air Fryer

Reheat at 350°F (175°C) for 2–3 minutes.

Microwave

Heat for 30–60 seconds.

Nutrition Information

Per Serving (Approximate)

Frequently Asked Questions

Which bell peppers work best?

A mix of red, yellow, orange, and green peppers gives the best flavor and color.

Can I use frozen peppers and onions?

Yes. Add 2–3 extra minutes to the cooking time and shake frequently.

How do I make them caramelized?

Cook for 14–16 minutes and stir halfway through.

Can I add mushrooms?

Absolutely! Mushrooms pair wonderfully with peppers and onions.

Are they keto-friendly?

Yes! Bell peppers and onions are relatively low in carbs and fit well into many low-carb meal plans.

Recipe Notes

✅ Quick and easy side dish.

✅ Naturally gluten-free.

✅ Great for meal prep.

✅ Colorful and flavorful.

✅ Ready in under 15 minutes.

Make-Ahead Tip

Slice the peppers and onions up to 2 days ahead and store in the refrigerator until ready to cook.

Serving Suggestion

Pile them onto fajitas, burgers, or grilled chicken for an easy flavor boost. 🫑🧅✨

Chef’s Secret

For restaurant-style flavor, add 1 teaspoon Worcestershire sauce to the vegetables before air frying. It enhances the savory taste and helps create beautifully caramelized edges. 😋🫑🧅✨

FAQs

Can I use sweet onions?

Yes! Sweet onions become wonderfully caramelized and flavorful.

Why are my vegetables soggy?

Overcrowding the basket can trap steam. Cook in a single layer whenever possible.

Can I make these oil-free?

Yes, but the vegetables may not brown as much.

What proteins pair best with this recipe?

Chicken, steak, shrimp, sausage, and pork all pair beautifully.

Can I meal prep this recipe?

Absolutely! These peppers and onions are excellent for meal-prep bowls, wraps, and sandwiches throughout the week.