Caramelized Onion & Blue Cheese Puff Pastry Tarts Recipe

Bynova cole
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Introduction

These Caramelized Onion & Blue Cheese Puff Pastry Tarts offer a perfect balance of sweet and savory flavors wrapped in buttery, flaky pastry. They make an impressive appetizer or elegant snack that’s surprisingly easy to prepare. Get ready to delight your guests with this rich and flavorful tart.

The image shows square puff pastry tartlets with three distinct layers: the bottom layer is a flaky, golden-brown puff pastry with visible light, crisp layers; the middle layer is a dark, glossy fig jam or similar fruit spread, filling the center of each tartlet; on top, there are crumbles of creamy white cheese and small green sprigs of fresh thyme scattered over the jam. The tartlets are placed on a white marbled surface, and at the bottom left corner, there is a white bowl with honey and a honey dipper partially visible. A few thyme sprigs are also laid on the surface near the bowl. photo taken with an iphone --ar 4:5 --v 7

Ingredients

  • 1 (17.3 oz.) package puff pastry, thawed in the fridge overnight
  • 2.5 pounds white or yellow onions, halved, then sliced 1/8″ thick
  • 1 tablespoon butter
  • 1 tablespoon olive oil
  • 1 teaspoon granulated sugar
  • 1 tablespoon dry white wine
  • Kosher salt
  • 1 egg, beaten
  • 9 oz. fig jam
  • 5 oz. crumbled blue cheese
  • 2 teaspoons fresh thyme leaves
  • Honey for drizzling

Instructions

  1. Step 1: Heat butter and olive oil in a large pot over medium heat. Add the sliced onions and stir to coat them in the oil.
  2. Step 2: Cook the onions for 60 minutes total, stirring every 4-5 minutes. After 10 minutes, add a pinch of kosher salt to help draw out moisture.
  3. Step 3: After 30 minutes, reduce the heat to medium-low and continue stirring regularly to prevent sticking.
  4. Step 4: After 40 minutes, add the granulated sugar to enhance caramelization. Keep stirring every few minutes until they reach a dark brown color.
  5. Step 5: Once caramelized at 60 minutes, pour in the white wine to deglaze the pan, scraping the bottom to lift any browned bits. Set aside.
  6. Step 6: Preheat the oven to 400°F (200°C) as the onions finish cooking.
  7. Step 7: Unroll the puff pastry sheets and cut along seams to create 6 rectangles total. Then cut each rectangle into 3 squares.
  8. Step 8: Use a knife to lightly score a half-inch border around each tart square, being careful not to cut all the way through.
  9. Step 9: Place the tarts about one inch apart on two parchment-lined baking sheets.
  10. Step 10: Brush the exposed crust edges with the beaten egg to promote a golden finish.
  11. Step 11: Spread about one teaspoon of fig jam in the center of each tart square.
  12. Step 12: Top the jam with one teaspoon of the caramelized onions.
  13. Step 13: Add a teaspoon of crumbled blue cheese on top of the onions.
  14. Step 14: Bake the tarts for 18-20 minutes, or until the pastry is puffed and golden brown.
  15. Step 15: Remove from oven, sprinkle fresh thyme leaves over each tart, and drizzle with honey for a touch of sweetness.
  16. Step 16: Serve warm or at room temperature. Enjoy your flavorful tarts!

Tips & Variations

  • Use yellow onions for a sweeter flavor or white onions for a sharper taste when caramelized.
  • Substitute blue cheese with goat cheese for a milder, creamy texture.
  • To save time, caramelize the onions a day ahead and store them refrigerated.
  • For a savory twist, add chopped walnuts or pecans on top before baking for crunch.

Storage

Store any leftover tarts in an airtight container in the refrigerator for up to 3 days. Reheat gently in a low oven (around 300°F) for 5-7 minutes to restore crispness. These tarts are best enjoyed fresh but can also be served at room temperature.

How to Serve

A close-up image of a stack of four square puff pastry tarts placed on a white marbled surface, each tart showing clear, golden, crispy layers of flaky dough. On top of the stack, the top tart is filled with dark, glossy fig jam, sprinkled with crumbled light blue cheese and small green herb leaves, likely thyme. A golden honey drizzle is being poured from above onto the cheese, creating a shiny glaze that catches the light and drips down the sides of the pastries. The background is softly blurred, keeping focus on the rich textures and warm colors of the tarts. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use frozen puff pastry instead of thawed?

Frozen puff pastry should be fully thawed in the refrigerator overnight before using to ensure it rolls out easily and bakes evenly.

How do I know when the onions are properly caramelized?

The onions should be deep golden brown, soft, and sweet in aroma, with all moisture cooked off. This typically takes about 60 minutes of slow cooking while stirring regularly.

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Caramelized Onion & Blue Cheese Puff Pastry Tarts Recipe

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★★★★★

4.6 from 91 reviews

These Caramelized Onion & Blue Cheese Puff Pastry Tarts are elegant, savory bites perfect for entertaining or a sophisticated snack. Sweet caramelized onions pair beautifully with tangy blue cheese and a touch of fig jam on flaky puff pastry, finished with fresh thyme and a honey drizzle for a perfect balance of flavors.

  • Author: nova
  • Prep Time: 20 minutes
  • Cook Time: 1 hour 20 minutes
  • Total Time: 1 hour 40 minutes
  • Yield: 18 tarts 1x
  • Category: Appetizer
  • Method: Baking
  • Cuisine: French-inspired

Ingredients

Scale

Puff Pastry

  • 1 (17.3 oz.) package puff pastry, thawed in the fridge overnight

Caramelized Onions

  • 2.5 pounds white or yellow onions, halved, then sliced 1/8″ thick
  • 1 tablespoon butter
  • 1 tablespoon olive oil
  • 1 teaspoon granulated sugar
  • 1 tablespoon dry white wine
  • Kosher salt, to taste

Toppings & Finishes

  • 1 egg, beaten (for egg wash)
  • 9 oz. fig jam
  • 5 oz. crumbled blue cheese
  • 2 teaspoons fresh thyme leaves
  • Honey, for drizzling

Instructions

  1. Heat Butter and Oil: Heat the butter and olive oil in a large pot over medium heat, preparing the pan for caramelizing the onions.
  2. Add Onions and Salt: Stir the sliced onions in the pot to coat with oil and cook for 10 minutes. Then, add a pinch of kosher salt to aid in drawing out moisture.
  3. Continue Cooking Onions: Cook onions for a total of 60 minutes, stirring every 4-5 minutes. After 30 minutes, reduce heat to medium-low to help slowly caramelize.
  4. Add Sugar: At 40 minutes into cooking, add 1 teaspoon granulated sugar to enhance the caramelization and sweetness. Continue stirring frequently.
  5. Deglaze with Wine: When the onions reach a rich dark brown after 60 minutes, pour in 1 tablespoon white wine and deglaze the pan by scraping the browned bits off the bottom. Set aside.
  6. Preheat Oven: As the onions finish cooking, preheat the oven to 400°F (200°C) to prepare for baking the tarts.
  7. Prepare Puff Pastry: Unroll both sheets of thawed puff pastry and cut along the seams into 6 rectangles total, then cut each rectangle into 3 squares, making 18 squares overall.
  8. Score the Tart Crust: Use a knife to score a half-inch border around the edge of each puff pastry square to create a crust edge.
  9. Arrange on Baking Sheets: Transfer the squares about an inch apart onto two parchment paper-lined baking sheets.
  10. Apply Egg Wash: Brush the outer crust edges of each tart square with beaten egg to promote browning.
  11. Add Fig Jam: Spread about 1 teaspoon of fig jam in the center of each tart square.
  12. Top with Caramelized Onions: Add 1 teaspoon of caramelized onions on top of the fig jam.
  13. Add Blue Cheese: Sprinkle 1 teaspoon of crumbled blue cheese over the onions on each tart.
  14. Bake Tarts: Bake the assembled tarts in the preheated oven for 18-20 minutes, or until the puff pastry is dark golden brown and fully puffed.
  15. Finish and Serve: Remove from oven, sprinkle fresh thyme leaves over each tart and drizzle with honey. Serve warm or at room temperature.

Notes

  • You can substitute yellow onions with sweet onions for a milder flavor.
  • Be patient with the caramelization process; stirring regularly prevents burning and ensures even cooking.
  • Use cold puff pastry and handle it as little as possible to maintain flakiness.
  • Store leftovers in an airtight container and reheat in the oven to retain crispness.
  • This recipe can be doubled or halved easily depending on the number of servings needed.

Keywords: caramelized onion tarts, blue cheese tarts, puff pastry appetizers, savory tarts, fig jam tarts

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