Caramelized onion tartlets are a delightful treat that combine sweet, rich flavors with flaky pastry. Picture this: golden-brown onions, slow-cooked until they melt in your mouth, nestled in a buttery crust that just begs to be devoured.

Every time I make these tartlets, I can’t help but reminisce about the first time I served them at a family gathering. My cousin’s eyes lit up as he devoured the last one, claiming it was the best thing he’d ever tasted. These savory bites are perfect for parties or cozy nights in when you want to impress yourself and your guests.

I remember the first time I served these little delights; my friends couldn’t get enough and kept asking for the “secret ingredient.” Spoiler alert: it’s love and a touch of patience.

Essential Ingredients

Here’s what you’ll need to make this delicious dish:

• Puff Pastry: Use store-bought puff pastry for convenience; it puffs beautifully and saves you time.
• Yellow Onions: Choose sweet yellow onions for their natural sweetness; they caramelize perfectly.
• Butter: Real butter adds richness; don’t skimp on this ingredient for maximum flavor.
• Fresh Thyme: Fresh thyme elevates the flavor profile; its aroma complements the sweetness of the onions wonderfully.
• Goat Cheese or Cream Cheese: Either cheese adds creaminess; goat cheese offers a tangy twist while cream cheese provides smoothness.
• Balsamic Vinegar: A splash of balsamic vinegar enhances sweetness and adds depth; use high-quality vinegar for best results.

The full ingredients list, including measurements, is provided in the recipe card directly below.

How to Make Caramelized Onion Tartlets

Prepare the Puff Pastry: Preheat your oven to 400°F (200°C) while you roll out thawed puff pastry. Cut it into squares about 4 inches by 4 inches and place them on a parchment-lined baking sheet.

Caramelize the Onions: In a skillet over medium heat, melt butter until bubbly. Add sliced onions, stirring occasionally until they turn golden brown and soft, approximately 25 minutes. Enjoy that sweet aroma filling your kitchen!

Add Flavor with Thyme and Balsamic Vinegar: Stir in fresh thyme leaves and balsamic vinegar during the last five minutes of cooking. The mixture should bubble gently as it thickens slightly.

Assemble the Tartlets: Place a spoonful of caramelized onion mixture onto each pastry square, leaving space around the edges. Top each dollop with crumbled goat cheese or cream cheese to create an irresistibly creamy texture.

Bake to Perfection: Bake in your preheated oven for about 15-20 minutes until the pastry is golden brown and puffy. As they bake, prepare yourself for some serious deliciousness wafting through your home!

With each step, you’re not just following instructions—you’re crafting an experience that brings joy and satisfaction.

Enjoy these caramelized onion tartlets warm out of the oven for an unforgettable treat that will have everyone raving!

Perfecting the Cooking Process

To create these delectable tartlets efficiently, start by caramelizing the onions first while prepping the pastry. This multitasking method ensures optimal flavors and keeps everything moving smoothly.

Add Your Touch

Feel free to experiment with different cheeses like goat cheese or feta, or toss in some herbs like thyme for an extra kick. Personalizing your tartlets can elevate them to new heights.

Storing & Reheating

Store leftover tartlets in an airtight container in the fridge for up to three days. Reheat them in the oven at 350°F until warmed through for best results.

Creating these caramelized onion tartlets always reminds me of my friend’s dinner party where they stole the show, leaving everyone clamoring for seconds. Their smiles were worth every minute spent in the kitchen.

FAQ

Can I make caramelized onion tartlets ahead of time?

Yes, you can prepare the filling and pastry separately in advance.

What type of cheese works best for these tartlets?

Soft cheeses like goat cheese or creamy brie complement caramelized onions beautifully.

How do I prevent soggy pastry with my tartlets?

Pre-bake the pastry slightly before adding the filling for a crispier texture.

Print

Caramelized Onion Tartlets

---

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

• Author: Ann Foster
• Total Time: 40 minutes
• Yield: Makes approximately 12 tartlets 1x

Print Recipe

Pin Recipe

Description

Caramelized onion tartlets are a crowd-pleasing appetizer that harmonizes sweet, savory flavors with a flaky pastry crust. These bite-sized delights feature slow-cooked onions caramelized to perfection and topped with creamy cheese, making them ideal for gatherings or cozy nights in. With their elegant presentation and irresistible aroma, these tartlets will leave your guests asking for more.

---

Ingredients

Scale 1x2x3x

• 1 sheet puff pastry (thawed)
• 2 large yellow onions (sliced)
• 4 tbsp unsalted butter
• 1 tsp fresh thyme leaves
• 4 oz goat cheese or cream cheese (crumbled)
• 1 tbsp balsamic vinegar
• Salt and pepper to taste

Cook Mode Prevent your screen from going dark

---

Instructions

1. Preheat oven to 400°F (200°C). Roll out puff pastry and cut into 4-inch squares. Place on a parchment-lined baking sheet.
2. In a skillet, melt butter over medium heat. Add sliced onions, cooking until golden brown and soft, about 25 minutes.
3. Stir in thyme and balsamic vinegar in the last 5 minutes of cooking; season with salt and pepper.
4. Spoon the caramelized onion mixture onto each pastry square and top with crumbled cheese.
5. Bake for 15-20 minutes until the pastry is golden brown.

• Prep Time: 15 minutes
• Cook Time: 25 minutes
• Category: Appetizer
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 1 tartlet (30g)
• Calories: 150
• Sugar: 2g
• Sodium: 200mg
• Fat: 10g
• Saturated Fat: 6g
• Unsaturated Fat: 3g
• Trans Fat: 0g
• Carbohydrates: 12g
• Fiber: 1g
• Protein: 3g
• Cholesterol: 20mg