If you love crunchy toppings and snackable sides, this crispy fried onion recipe is about to become a favorite. Thinly sliced onions are soaked in milk and water, coated in flour, then fried until golden and irresistibly crisp. They’re perfect for burgers, steaks, casseroles, salads, or enjoying by the handful straight from the bowl.
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Crispy onions are popular all year long, especially during the holidays when they’re used on green bean casserole, burgers, and party platters. The milk soak helps mellow the onion flavor while keeping the inside tender and the outside extra crunchy after frying.
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Ingredients
You only need a few pantry staples to make this easy recipe. Onion is the star, flour creates the crispy coating, and the milk soak gives the slices a smoother flavor and softer center. Use neutral oil with a high smoke point for the best frying results.
- Yellow onion
- Milk
- Water
- All-purpose flour
- Salt
- Vegetable oil
See recipe card for exact quantities.
Instructions
- Slice the onion as thinly as possible. Separate the layers well with your hands so the pieces fry evenly and don’t clump together.
- Transfer the onion to a bowl. Add milk and water, cover, and refrigerate for 1 hour. This step softens the sharp flavor and improves the texture.
- Drain lightly, then coat the onion in flour a little at a time. Toss well so every strand gets a light, even layer.
- Heat the oil and fry in small batches. Stir and turn as needed until deep golden brown and crispy. Drain on paper towels, then season with salt.
Hint: Fry in small batches only. Overcrowding lowers the oil temperature and can make the onions greasy instead of crisp.
Substitutions
Here are a few easy ways to adapt this recipe.
- Onion - Use sweet onions for a milder flavor.
- Flour - Use gluten-free all-purpose flour blend if needed.
- Milk - Use buttermilk for extra flavor or dairy-free milk for a dairy-free version.
Variations
Change the flavor depending on how you plan to serve them.
- Spicy - Add cayenne or chili powder to the flour.
- Garlic - Mix garlic powder into the coating.
- Herb Seasoned - Finish with dried parsley or ranch seasoning.
Equipment
A sharp knife or mandoline helps create thin, even slices. A heavy skillet or saucepan keeps the oil temperature steady, and a slotted spoon makes removing the onions easier and safer.
Storage
Store cooled fried onions in an airtight container at room temperature for 1 day or in the refrigerator for up to 3 days. Re-crisp in the oven or air fryer before serving.
Freezing is not recommended, as the coating can lose its crunch after thawing.
Top Tip
Slice the onion paper-thin. The thinner the slices, the lighter and crispier the final result will be.
FAQ
Milk helps mellow the strong onion flavor and gives the inside a softer texture while the outside turns crispy.
Usually the oil was not hot enough or the pan was overcrowded. Fry in small batches and keep the oil hot.
How it turned out
These onions turn out beautifully golden, light, and crunchy with a balanced onion flavor. They add texture and savory flavor to almost anything you serve them with.
Related
Looking for more crispy side dishes? Try these next.
Pairing
These are delicious with burgers, grilled steak, sandwiches, casseroles, and barbecue favorites.
Crispy Fried Onion
Equipment
- 1 Knife
- 1 Cutting board
- 1 Mixing bowl
- 1 skillet or saucepan
- 1 slotted spoon
- Paper towels
Ingredients
- 1 large Yellow onion thinly sliced
- ¾ cup Milk
- ¾ cup Water
- 1 cup All-purpose flour
- Vegetable oil for frying
- ½ teaspoon Salt
Instructions
- Slice the onion very thinly and separate all layers with your hands.
- Place the onion in a bowl and add the milk and water.
- Cover and refrigerate for 1 hour.
- Remove from the refrigerator and lightly drain the onion.
- Coat the onion slices in flour little by little, tossing well for even coverage.
- Heat 2 to 3 inches of oil in a skillet or saucepan over medium-high heat.
- Fry the onion in small batches until golden brown and crispy, stirring occasionally.
- Transfer to paper towels to drain excess oil.
- Season with salt and serve immediately.
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