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Crispy fried onions on a paper towel
5 from 4 votes

Crispy Fried Onions

It’s easy to make homemade Crispy Fried Onions from scratch. A simple recipe for deep fried crispy onions makes the perfect topping for casseroles and soups.
Author Diana
Servings 10 servings
Prep Time 10 minutes
Cook Time 15 minutes
Marinating Time 30 minutes
Total Time 55 minutes

Equipment

Ingredients

  • 2 large onions
  • 1 cup buttermilk
  • 1 cup all-purpose flour
  • Salt to taste
  • Oil for frying

Instructions

  • Use a mandolin or a shap knife, and slice the onions in thin rings. Using your hands separate the onion rings.
  • In a large bowl or a gallon sized ziploc bag, combine the onions with buttermilk and salt. Marinate for 30 minutes and up to 24 hours.
  • Remove the onions from the buttermilk, and drain then toss in seasoned flour (with salt, and pepper if desired).
  • In a saucepan, or a dutch oven, heat vegetable or canola oil to 350°F/180°C. Line a plate or a wire rack with paper towels.
  • Fry the onion in small batches for 2-3 minutes or until golden browned. Drain on the paper towels, and if desired season with salt while still hot.

Notes

  • Make these crispy fried onions gluten free using gluten free flour in place of the all-purpose flour.
  • Store crispy fried onions in an airtight container in the refrigerator and use within 3 days. To reheat, use your oven or air fryer to keep them crisp. 

Nutrition

Calories: 76kcal | Carbohydrates: 14g | Protein: 3g | Fat: 1g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Cholesterol: 3mg | Sodium: 28mg | Potassium: 92mg | Fiber: 1g | Sugar: 3g | Vitamin A: 42IU | Vitamin C: 2mg | Calcium: 38mg | Iron: 1mg