Mini Brie and Caramelized Onion Tartlets Recipe
If you’re craving a bite-sized delight that’s bursting with flavor and elegance, you’re going to adore these Mini Brie and Caramelized Onion Tartlets. Imagine sweet, deeply golden caramelized onions paired with ooey-gooey, creamy brie cheese, all nestled inside a crisp, buttery tart shell. These tartlets are the perfect little crowd-pleasers for any occasion, from casual get-togethers to fancy dinner parties. Each bite delivers a wonderful balance of sweetness, richness, and flaky texture that makes Mini Brie and Caramelized Onion Tartlets so irresistibly memorable.

Ingredients You’ll Need
The magic behind Mini Brie and Caramelized Onion Tartlets lies in their simplicity. Each ingredient plays a vital role, from the caramelized onions providing a sweet depth to the creamy brie adding luscious indulgence, all wrapped up in buttery tart shells that offer the perfect crunch.
- 1 cup caramelized onions: Slowly cooked to bring out their natural sweetness and rich flavor.
- 1/2 wheel brie cheese: Soft and creamy with a mild, nutty taste that melts beautifully.
- 12 mini tart shells: Buttery and crisp, the perfect vessel to hold the luscious filling.
How to Make Mini Brie and Caramelized Onion Tartlets
Step 1: Prepare the Caramelized Onions
If you don’t have pre-made caramelized onions, start by slowly cooking thinly sliced onions in a bit of butter or oil over low heat. Patience is key here — letting them cook down gently releases their natural sugars, turning them a golden brown and developing that sweet, savory flavor that defines these tartlets.
Step 2: Preheat Your Oven
Set your oven to 375°F (190°C). This temperature is perfect for baking the tartlets so the brie melts nicely without drying out the delicate pastry shells.
Step 3: Assemble the Tartlets
Take your mini tart shells and gently fill each one with a spoonful of caramelized onions. Tear or slice the brie cheese into small pieces and nestle it on top of the onions, ensuring each tartlet gets a generous amount of creamy brie.
Step 4: Bake to Perfection
Place the filled tartlets on a baking sheet and pop them into the oven for about 20 minutes. You’ll know they’re ready when the brie is melted and begins to turn a delicate golden color, while the shells remain crisp and inviting.
How to Serve Mini Brie and Caramelized Onion Tartlets

Garnishes
These tartlets shine on their own, but a sprinkle of fresh thyme or rosemary leaves adds a lovely herbaceous note that complements the rich flavors beautifully. A tiny drizzle of honey can also enhance the sweetness of the onions and balance the cheese’s earthiness.
Side Dishes
For a wonderful appetizer spread, serve your Mini Brie and Caramelized Onion Tartlets alongside a crisp green salad with a tangy vinaigrette. Lightly dressed arugula or mixed greens provide a refreshing contrast that keeps the meal balanced and satisfying.
Creative Ways to Present
Arrange the tartlets on a rustic wooden board or a chic slate platter to give your presentation an elegant touch. Adding a few clusters of grapes or figs around the tartlets not only looks stunning but also pairs deliciously with the flavors of brie and onion.
Make Ahead and Storage
Storing Leftovers
If you find yourself with leftovers — which can happen because these Mini Brie and Caramelized Onion Tartlets are so tempting — store them in an airtight container in the refrigerator. They’ll stay fresh for up to 2 days, making for an easy snack or quick appetizer later.
Freezing
While these tartlets taste best fresh, you can freeze them if needed. Place the assembled but unbaked tartlets in a single layer on a baking sheet to freeze solid, then transfer them to a sealed container or bag. Bake straight from frozen, adding a few extra minutes to the cook time.
Reheating
To reheat, pop your tartlets in a preheated oven at 350°F (175°C) for about 10 minutes until warmed through and the brie is gooey again. Avoid microwaving to keep the pastry crisp and prevent the cheese from becoming rubbery.
FAQs
Can I use a different type of cheese instead of brie?
Absolutely! While brie’s creamy texture and mild flavor are perfect, you can try camembert or even a soft goat cheese for a twist. Just keep in mind the flavor profiles will change slightly.
How do I caramelize onions properly?
Patience is essential! Slice your onions thinly and cook them over low heat with a bit of oil or butter, stirring occasionally for about 30-40 minutes until they turn golden brown and sweet. Rushing this process can lead to burnt or bitter onions.
Are these tartlets suitable for vegetarians?
Yes, they are completely vegetarian-friendly, featuring no meat or animal-based gelatin. Just ensure your tart shells do not contain lard or other non-vegetarian ingredients if you are buying them pre-made.
Can I prepare the tartlets in advance?
You can assemble the tartlets a few hours ahead and keep them refrigerated until baking. This makes it easier to manage your time on the day of your event.
What is the best way to serve Mini Brie and Caramelized Onion Tartlets for a party?
Serve them warm on a platter with fresh herbs for garnish. Providing small plates and napkins helps your guests enjoy these delightful bites mess-free.
Final Thoughts
Mini Brie and Caramelized Onion Tartlets are truly one of those recipes that feel both effortlessly elegant and deeply comforting. They’re perfect for sharing with friends or treating yourself to a gourmet snack. Once you try them, these tartlets will quickly become a beloved favorite in your recipe collection, guaranteed to bring smiles at every gathering!
