French Onion Soup Bites

Serve up this bite sized twist on a classic favorite at your next party, these French Onion Soup Bites are loaded with flavor and have all the savory goodness of French onion soup wrapped up in flaky, golden puff pastry!

French Onion Soup Bites

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I absolutely love these little French Onion Soup Bites! They’re perfect for cozy winter holidays, especially as an easy Christmas appetizer. All the rich onion flavor from French Onion Soup baked into little puff pastry cups, they’re DELICIOUS!

Ingredients you’ll need

Remember, find the full printable recipe at the end of this blog post! Here is a quick snapshot of the ingredients you’ll need for French Onion Soup Bites!

  • Sweet Onions
  • Sugar
  • Puff Pastry
  • Black Pepper
  • Butter
  • Sherry (or Red Wine Vinegar)
  • Chopped Thyme
  • Gruyere or Swiss Cheese
French Onion Soup Bites

Top Recipe Tips for French Onion Soup Bites

Here are a few top tips for making this appetizer recipe with ease!

Thaw Puff Pastry Properly: Make sure to thaw your puff pastry according to the package instructions. I usually like to set mine out while I’m slicing up my onions so it’s easy to work with when I’m ready to cut it into squares.

Master the Caramelization: Patience is key when caramelizing onions. Keep the heat at a medium to medium-low level and stir occasionally. The slow process allows the onions to sweeten and caramelize to perfection. Don’t rush this step – it will be worth it!

Size Matters: When cutting the puff pastry into squares, aim for uniformity. This ensures even baking, and each bite will be a delightful balance of pastry, caramelized onions, and gooey cheese.

Lots of Onions: It may seem like 3 sweet onions is a LOT for 24 little puff pastry bites, but they cook down quite a lot when caramelizing. Plus, you want to add a heaping tablespoon to your puff pastry because it gives these French Onion Soup Bites their flavor! So don’t skimp on the onions! You can also swap in Vidalia Onion if you have them!

Making puff pastry french onion soup bites

Experiment with Cheese: While gruyere and Swiss cheese are classic choices, don’t hesitate to get creative. Try a mix of cheeses like mozzarella or fontina for a unique twist on the traditional recipe.

Watch the Oven: Keep a close eye on the oven during the baking process. The puff pastry can go from golden perfection to too-dark-too-fast.

French Onion Soup Bites in Mini Muffin Pan

Thyme for the Finishing Touch: I love to add fresh herbs to most of my appetizers because not only does it make them so pretty but also adds a boost of flavor!

I also like to garnish my platters with herbs like extra thyme or rosemary sprigs!

French onion Soup bites in puff pastry

Can you make French Onion Soup Bites in advance?

YES! Need to save time during the hustle and bustle of the busy holiday season? You can prepare the caramelized onions ahead of time and store them in the fridge. When you’re ready to assemble, the hard part is already done.

French Onion Soup Bites Appetizer

There you have it – your top tips to French Onion Soup Bites perfection! Enjoy these bite-sized delights during the holiday season and all year round!

More Party Appetizers to Enjoy:

French Onion Soup Bites

French Onion Soup Bites

Bite sized puff pastry appetizer filled with all the delicious flavors of French onion soup!
SERVINGS 24 bites


  • 1 sheet frozen puff pastry - thawed
  • 3 medium sweet onions - thinly sliced (about 4 cups)
  • 4 tbsp salted butter
  • 1 tsp sugar
  • 1/2 tsp black pepper
  • 2 tbsp dry sherry or red wine vinegar
  • 1 cup shredded gruyere cheese or swiss cheese
  • 1 tbsp thyme - chopped


  • Preheat the oven to 375℉. Lightly grease a 24-cavity mini muffin pan. Set aside.
  • Heat a large sauté pan over medium heat, add the butter and allow to melt. Add in onions and quickly toss to separate the slices. Sauté, stirring occasionally, until the onions are soft and start to brown. Sprinkle sugar and black pepper over the onions. If onions begin to cook too quickly, lower heat to medium-low. They will be tender and caramelized when done, roughly 25 to 30 minutes. Stir in the dry sherry or red wine vinegar and remove from the heat. Set aside in a small bowl.
  • While onions are cooking, lightly flour a clean work surface and roll out your thawed puff pastry sheet to flatten it slightly. Carefully use a knife to cut your puff pastry into 24 equal small squares.
  • Press a square of the puff pastry into each cavity of the mini muffin baking pan. Top each puff pastry square with a tablespoon of caramelized onions.
  • Top each with a sprinkle of shredded gruyere cheese or Swiss cheese.
  • Bake french onion soup bites until they're puffed and golden brown, about 18 to 22 minutes. Watch carefully to be sure they don't burn. Serve warm or room temperature. Garnish with chopped thyme.


Calories: 111kcalCarbohydrates: 8gProtein: 3gFat: 8gSaturated Fat: 3gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gTrans Fat: 0.1gCholesterol: 11mgSodium: 83mgPotassium: 64mgFiber: 1gSugar: 2gVitamin A: 125IUVitamin C: 2mgCalcium: 67mgIron: 0.4mg
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