Air fryer fried oyster mushrooms recipe in a bowl on a red background.

Buttermilk Fried Mushrooms

This Buttermilk Fried Mushrooms recipe is about to revolutionize your vegetarian cooking. With fried oyster mushrooms and a crunchy coating, it tastes just like fried chicken!
Course Main Dishes, Side Dishes
Cuisine American
Keyword fried mushrooms, fried oyster mushrooms, vegetarian fried chicken
Diet Dairy-Free, Vegan, Vegetarian
Occasion 4th of July, Game Day
Time 45 minutes or less
Prep Time 30 minutes
Cook Time 15 minutes
Total Time 45 minutes
Servings 2 servings
Calories 355kcal
Author Sarah Bond


  • 2 heaping cups oyster mushrooms
  • 1 cup buttermilk 240 mL, see notes for vegan substitute
  • 1 1/2 cups all-purpose flour 200 g
  • 1 tsp each salt, pepper, garlic powder, onion powder, smoked paprika, cumin
  • 1 Tbsp oil*


  • Marinate: Preheat air fryer to 375 degrees F (190 C). Clean mushrooms then toss together with buttermilk in a large bowl. Let marinate for 15 minutes.
  • Breading: In a large bowl combine flour and spices. Spoon mushrooms out of the buttermilk (save the buttermilk). Dip each mushroom in the flour mixture, shake off excess flour, dip once more in the buttermilk, then once more in the flour (in short: wet > dry > wet > dry).
  • Cook: Grease the bottom of your air fry pan well, then place mushrooms in a single layer, leaving space between mushrooms. Cook for 5 minutes, then roughly brush all sides with a little oil to promote browning. Continue cooking 5 to 10 more minutes, until golden brown and crispy.


  • Make vegan buttermilk by combining 1 1/2 Tbsp lemon juice + 1 1/2 cups plain soy milk.
  • *Alternatively, spritz with cooking spray for even coverage and less overall oil.


Serving: 1serving | Calories: 355kcal | Carbohydrates: 57g | Protein: 12.4g | Fat: 9.7g | Saturated Fat: 1.7g | Cholesterol: 5mg | Sodium: 1012mg | Potassium: 491mg | Fiber: 3g | Sugar: 6.7g | Calcium: 120mg | Iron: 3.8mg