French Onion Deviled Eggs

French onion deviled eggs happen when two classics have a baby. They combine everything people love about traditional deviled eggs with the deep, savory richness of French onion soup. Trust me, you won’t be able to stop at just one!

I love the flavors of French caramelized onions (which is why my favorite dip is French onion dip of course!). What sets this recipe apart is balance. My version keeps things bright and savory, letting properly caramelized onions do the heavy lifting while sour cream adds tang without overwhelming the egg yolks. The result is a filling that’s silky and deeply flavorful.

If you’re looking for a twist on the classic deviled egg recipe that feels elevated but is still simple enough for holidays, brunch, baby showers, or casual entertaining, this is the one. These French onion deviled eggs consistently disappear! If you aren’t able to get your hands on caramelized onions, try my Cacio Pepe Deviled Eggs!

Jump to:

• Why this recipe works
• Ingredients
• How to make french onion deviled eggs
• Substitutions and variations
• Storage
• FAQ
• Rate this recipe
• French Onion Deviled Eggs

Why this recipe works

• Bold French onion flavor in a unique and unexpected way
• Feels elevated and gourmet while using familiar, accessible ingredients
• Naturally gluten-free and easy to adapt for dairy-free guests
• The perfect finger food, making them ideal for entertaining

Ingredients

• Hardboiled eggs – The foundation of the recipe and my Cacio Pepe deviled eggs. You can buy them prevailed, or boil for 10-12 minutes.
• French caramelized onions – Slow-cooked onions add deep umami, subtle sweetness, and the signature French onion flavor. I have a full tutorial!
• Mayonnaise – Provides richness and structure, creating a smooth and stable filling.
• Sour cream – Adds tang and lightness; it balances the sweetness of the onions (or substitute more mayonnaise for dairy-free).
• Fresh chives – Bring a mild oniony freshness that brightens the filling and adds color when used as a garnish.
• Dijon mustard – Sharp and slightly acidic, Dijon enhances the savory notes without overpowering the eggs.
• Garlic salt & pepper – For extra flavor throughout.

See recipe card for quantities.

How to make french onion deviled eggs

1. Halve the eggs and separate the yolks. Slice the hardboiled eggs lengthwise and carefully remove the yolks, placing them into a medium mixing bowl. Set the whites aside on a plate or tray.
2. Combine the filling ingredients. Add the caramelized onions, mayonnaise, sour cream, chopped chives, Dijon mustard, and garlic salt to the bowl with the egg yolks.
3. Blend until smooth and creamy. Use an immersion blender to blend the mixture until completely uniform and silky; taste and adjust seasoning, adding more mayonnaise or sour cream if you prefer a looser texture.
4. Pipe the filling into the whites. Transfer the yolk mixture to a piping bag or a zip-top bag with a small corner cut off, then neatly pipe the filling back into the egg whites.
5. Garnish and serve. Arrange the deviled eggs on a serving platter and finish with extra caramelized onions, chopped chives, and freshly ground black pepper if desired.

NOTE: If you do not have an immersion blender, that’s fine! Be sure to just chop up the caramelized onions so they aren’t long and stringy before adding to the yolk mixture. Then you can mix everything together with a fork, making sure to mash up the yolks fully. Continue on to step 4 per instructed.

Substitutions and variations

• Dairy-free: Use all mayonnaise instead of sour cream for a completely dairy-free filling.
• Extra savory: Add a splash of Worcestershire sauce or a pinch of onion powder for deeper umami.
• Cheesy twist: Fold in a small amount of finely grated Gruyère or Comté for a nod to classic French onion soup.
• Herb swap: Replace chives with finely minced parsley or tarragon for a different herbal note.

Storage

These French onion deviled eggs are best enjoyed the day they are made. However, here are some tips if that just isn’t possible!

Make Ahead

You can make the yolk mixture one or two days ahead (up to step 3). Keep in an airtight, air-free container (such as a ziplock bag with excess air removed). You can then use this bag to pipe into the whites.

Store the egg whites in an airtight container. When ready to serve, continue at step 4 and pipe the yolks into the whites.

Storing Leftovers

Leftover, fully assembled French onion deviled eggs can be stored for up to 24 hours, tightly covered and refrigerated.

FAQ

Rate this recipe

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