Crispy, golden, and bursting with flavor, homemade fried onions are easy to make with a buttermilk soak and seasoned flour dredge. Perfect for topping casseroles, burgers, or enjoying as a snack, this homemade version beats store-bought every time. Make your Thanksgiving dishes unforgettable with these crunchy onions!
There’s nothing quite like the satisfying crunch and rich flavor of fried onions. While store-bought French-fried onions are convenient, making them at home allows you to control the seasoning, texture, and freshness. In this recipe, we’ll soak thinly sliced onions in buttermilk and coat them in a seasoned flour dredge before frying to golden perfection. Whether you’re adding them to a casserole, a burger, or enjoying them straight from the pan, these homemade fried onions are a game-changer.
This is a pinnable post. Tap or hover over any image in this post to pin to your Pinterest Boards.

Homemade Fried Onions Are Perfect for Thanksgiving
Thanksgiving is all about rich flavors and comforting dishes, and homemade fried onions take classic recipes like green bean casserole to the next level. Crispy, golden, and perfectly seasoned, they add a delightful crunch to your holiday table. Skip the store-bought version this year and impress your guests with these easy-to-make fried onions that elevate any Thanksgiving dish.

Recipe Tutorial
Ingredients
- 2 large onions, thinly sliced
- 1 cup buttermilk
- 1 cup all-purpose flour
- 1 tsp salt
- 1/2 tsp black pepper
- 1/2 tsp paprika (optional)
- Vegetable oil for frying
Instructions
- Soak the onions: Place the thinly sliced onions in a bowl and cover with buttermilk. Let soak for 30 minutes to an hour.
- Prepare the dredge: In a separate bowl, mix flour, salt, pepper, and paprika.
- Coat the onions: Remove onions from buttermilk, shaking off excess, then dredge in the seasoned flour until evenly coated.
- Heat the oil: Pour about 1/2 inch of vegetable oil into a skillet and heat to 350°F (175°C).
- Fry the onions: Fry in batches, making sure not to overcrowd the pan. Fry until golden brown and crispy, about 2–4 minutes per batch.
- Drain and serve: Remove fried onions with a slotted spoon and place on a paper towel-lined plate to drain excess oil. Serve warm.

Slicing and soaking the onions is a quick process, especially on Thanksgiving day when you have other things to do in the kitchen. You can push the bowl aside for a half hour and get some other things done.

Coating the sliced onions in flour and placing on a plate helps for a smooth process. I did this is small batches to ensure every slice of onion got a good coat of flour.


Using a wire slotted spoon makes this an easy cooking experience. Be sure to go slow and carefully drop in the flour coated onions in small batches at a time.

Place them on a clean towel on a plate to soak up the excess oil.

These homemade fried onions turned out perfect and delicious on this Thanksgiving day! We cannot wait to consume them!

Tips & Tricks for Perfect Fried Onions
Slice Evenly: For uniformly crispy onions, slice them as evenly as possible. A mandoline slicer works great for consistent thin slices.
Avoid Sogginess: Make sure to shake off excess buttermilk before dredging in flour. Over-soaked onions can create soggy fried pieces.
Choose the Right Oil: Vegetable, canola, or peanut oil work best for frying due to their high smoke points.
Maintain Oil Temperature: Fry in batches to keep the oil hot. Overcrowding the pan will lower the temperature and make onions greasy.
Drain Properly: Always place fried onions on paper towels to remove excess oil and maintain crispiness.
Variations to Customize Your Fried Onions
Spicy Fried Onions: Add a pinch of cayenne pepper, chili powder, or smoked paprika to the flour for a subtle kick.
Gluten-Free Version: Swap all-purpose flour for rice flour or almond flour for a gluten-free crunchy topping.
Baked Onions: For a lighter alternative, spread coated onions on a baking sheet and bake at 400°F (200°C) for 10–15 minutes, flipping halfway.
Herb-Infused: Mix dried herbs like thyme, rosemary, or garlic powder into your flour for an aromatic twist.
Storage & Reheating
Short-Term Storage: Store fried onions in an airtight container at room temperature for up to 2 days.
Longer Storage: Refrigerate for up to a week or freeze for 1–2 months. Spread frozen onions on a baking sheet before freezing to avoid clumping.
Reheating Tips: Reheat in a skillet or oven for a few minutes to restore crispiness. Avoid microwaving, as it can make them soggy.
Serving Suggestions & Pairings
Classic Thanksgiving Topping: Use fried onions on green bean casserole, mashed potatoes, or stuffing to add flavor and crunch.
Sandwiches & Burgers: Layer on sandwiches, burgers, or wraps for a crispy, savory texture.
Salads & Appetizers: Sprinkle over salads, roasted vegetables, or soups for extra flavor.
Snack-Time Crunch: Enjoy straight from the pan as a simple, addictive snack.
Fun Facts About Fried Onions
Origins: French fried onions became popular in the U.S. as a topping for casseroles and holiday dishes.
Popularity in Green Bean Casserole: Their rise in fame is tied to Thanksgiving green bean casserole, which often calls for crunchy onion toppings.
Homemade vs. Store-Bought: Making fried onions at home gives you more control over seasoning, freshness, and texture.
Creative Uses: Beyond casseroles, fried onions can enhance everything from soups to burgers and even breakfast dishes like omelets or savory pancakes.
Conclusion
Making homemade fried onions is easier than you think, and the results are unbeatable. From elevating your Thanksgiving casseroles to adding a crunch to burgers or salads, these crispy onions are a versatile kitchen staple. With a simple buttermilk soak and seasoned flour coating, you can enjoy perfectly golden, flavorful onions anytime.

Frequently Asked Questions
1. Can I make fried onions ahead of time?
Yes! You can fry the onions and store them in an airtight container at room temperature for up to 2 days. Reheat briefly in a skillet to restore crispiness.
2. Can I bake the onions instead of frying?
Absolutely! Toss the coated onions on a baking sheet and bake at 400°F (200°C) for 10–15 minutes, turning halfway through, until golden and crispy.
3. What type of onions work best for frying?
Sweet onions like Vidalia or yellow onions work best as they have a natural sweetness that caramelizes nicely during frying.
4. Can I use milk instead of buttermilk?
Yes, but for best results, add 1 tsp of vinegar or lemon juice per cup of milk to mimic the acidity of buttermilk. This helps the coating stick better and adds flavor.

Homemade Fried Onions
Ingredients
- 2 large onions, thinly sliced
- 1 cup buttermilk
- 1 cup all-purpose flour
- 1 tsp salt
- ½ tsp black pepper
- ½ tsp paprika (optional)
- Vegetable oil for frying
Instructions
- Slice onions with a slicer.
- Soak onions in buttermilk for 30–60 minutes.
- Mix flour with salt, pepper, and paprika.
- Dredge onions in flour mixture.
- Heat oil to 350°F (175°C).
- Fry onions in batches 2–4 minutes until golden and crispy.
- Drain on paper towels and serve.
Summary
I hope I have inspired you to make these recipes in your cast iron skillet to enjoy and share with your friends and family.
If you were encouraged by this post, I invite you to check out my FREE Printables Page for fun free printables, planners, and charts.
ENTER MY FREE Printables Page HERE
Here are some more of my cast-iron cooking inspiration posts to check out!
How to Make Chicken Cobbler with Vegetarian Option
Buttermilk Pancakes: How to Make Sourdough Buttermilk Pancakes
Pumpkin Spice Pancakes: How to Make Sourdough Pumpkin Spice Pancakes
Chocolate Pancakes: How to Make Chocolate Sourdough Pancakes
The Best Cherry Galette Recipe
How to Cook Scrambled Eggs In a Cast Iron Skillet without Sticking!
How to Season Cast Iron for Cooking
The Best Old-Fashioned Homemade Brownies: A Cast Iron Skillet Recipe!
How to Make Dutch Oven Lasagna
How to Make Black Bean Burgers from the Garden!
Blessings,
The Off Grid Barefoot Girl


Discover more from The Off Grid Barefoot Girl
Subscribe to get the latest posts sent to your email.


