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Keto Air Fryer Caprese Stuffed Portobello Mushrooms

These Keto Air Fryer Caprese Stuffed Portobello Mushrooms are juicy, cheesy, and packed with flavor! Large portobello mushrooms are filled with fresh mozzarella, cherry tomatoes, and basil, then air-fried until golden and bubbly. A quick and easy low-carb, keto-friendly meal perfect for lunch, dinner, or a side dish.

Ingredients

Scale
  • 4 large portobello mushrooms (cleaned, stems removed)
  • 1 cup cherry tomatoes (halved)
  • 1 cup shredded or sliced mozzarella
  • 68 fresh basil leaves, chopped
  • 1 tbsp olive oil
  • 1 tsp balsamic vinegar (optional)
  • ½ tsp garlic powder
  • ½ tsp salt
  • ¼ tsp black pepper

Optional Toppings

  • 1 tbsp grated parmesan
  • ½ tsp red pepper flakes

Instructions

1️⃣ Prepare the Mushrooms

  • Wipe mushrooms clean with a damp paper towel (don’t rinse with water).
  • Remove stems and gently scrape out some of the gills to make room for the filling.
  • Brush both sides with olive oil and season with salt, pepper, and garlic powder.
  • (Optional) Drizzle balsamic vinegar inside each mushroom for extra flavor.

2️⃣ Make the Filling

  • In a bowl, toss cherry tomatoes with basil and a pinch of salt.
  • Mix in half of the mozzarella.

3️⃣ Stuff the Mushrooms

  • Fill each mushroom cap with the tomato-basil mixture.
  • Top with the remaining mozzarella and optional parmesan.

4️⃣ Air Fry the Mushrooms

  • Place mushrooms in the air fryer basket.
  • Cook at 375°F (190°C) for 10-12 minutes until cheese is bubbly and golden.
  • If you want extra crispiness, air fry for 2 more minutes.

5️⃣ Serve and Enjoy

  • Let mushrooms cool for a minute before serving.
  • Garnish with extra fresh basil and a drizzle of balsamic if desired.

Notes

  • Don’t rinse mushrooms with water – They absorb moisture and can get soggy.
  • Eat fresh – These taste best right out of the air fryer.
  • Reheat in the air fryer at 350°F for 3-5 minutes to keep them crispy.
  • Customize it – Try adding cooked bacon, pesto, or goat cheese for extra flavor.

Nutrition