Deliciously Moist Leek Tart with Gruyere and Onions Recipe

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by Hannah Reed

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Moist Leek Tart with Gruyere and Onions

There’s something absolutely magical about a Moist Leek Tart with Gruyere and Onions that sends your taste buds waltzing in delight. Imagine a perfectly golden, flaky crust cradling a creamy filling packed full of aromatic leeks, rich Gruyere cheese, and savory onions, all harmonizing in a delicious symphony of flavors. One bite and you’ll be transported to a cozy café in a quaint European village, where the warmth of the oven mingles with the sweet scents of comfort food, inviting you to stay for just one more slice.

This tart is not just a feast for the senses but also a nostalgic reminder of lazy Sunday afternoons spent in the kitchen with family, each layer of this tart carrying whispers of laughter and shared moments. Whether it’s a casual lunch with friends, a sophisticated dinner party, or simply an indulgent treat for yourself, the Moist Leek Tart with Gruyere and Onions is perfect for any occasion that calls for something special. Get ready to impress with the incredible blend of texture and flavor that this recipe brings to your table.

Why You'll Love This Moist Leek Tart with Gruyere and Onions

  • This amazing Moist Leek Tart with Gruyere and Onions offers more than just flavor; it makes meal prep a breeze.
  • You can easily customize the ingredients based on what you have on hand.
  • The vibrant colors and aromas make it visually stunning on any dinner table.
  • Perfect for grilling but versatile enough for baking or pan-searing.

Ingredients for Moist Leek Tart with Gruyere and Onions

Here’s what you’ll need to make this delicious Moist Leek Tart with Gruyere and Onions:

180 gr Plain Flour – This serves as the base for your tart crust, providing the necessary structure. Choose a high-quality flour for the best results.

1 pinch Salt – Essential for enhancing the overall flavor of the crust and the filling.

90 gr Unsalted Butter, very cold – The secret to a flaky crust lies in cold butter; it creates steam pockets during baking.

60 ml Cold Water – Helps bind the dough together while keeping it chilled and firm.

2 Leeks – These bring a mild onion flavor that is subtle yet fragrant. Look for fresh, firm leeks with vibrant green tops.

1 small Brown Onion – Adds sweetness and depth to the filling; make sure to slice them thinly for even cooking.

30 gr Unsalted Butter, or Olive Oil – Used for sautéing the leeks and onions, which mellows their flavors beautifully.

1/2 teaspoon Minced Garlic – Adds a delightful kick and enhances the savory profile of the tart.

2 large Eggs – Essential for binding the filling together and providing a rich, custard-like texture.

120 ml Heavy / Thickened Cream – Adds creaminess and richness to the filling; do use full-fat for the best flavor.

1 teaspoon Table Salt – A must-have for seasoning your filling for a balanced taste.

1/2 teaspoon Pepper – Enhances the overall flavor profile, adding a gentle warmth to each bite.

1 teaspoon Ground Cumin, optional – A twist that lends an earthy flavor that complements the leeks wonderfully, though it can be omitted if preferred.

35 gr Gruyere Cheese, grated – This nutty, melted cheese is the star of the show, giving the tart its signature taste and creaminess.

How to Make Moist Leek Tart with Gruyere and Onions

Follow these simple steps to prepare this delicious Moist Leek Tart with Gruyere and Onions:

Step 1: Make the Dough
In your food processor, combine finely milled flour and a pinch of salt. Add cold butter cut into small cubes and pulse until it resembles fine crumbs. Slowly add a little bit of cold water at a time, blending until the dough comes together. Aim for a consistency that is not sticky but pliable.

Step 2: Chill the Dough
Transfer the dough to a lightly floured sheet of baking paper, forming it into a disk. Cover with a second layer of paper and roll it out into a large rectangle. Place it in the fridge to rest for at least 60 minutes. This step ensures a flaky crust.

Step 3: Prepare the Crust
After chilling, remove the dough and line your baking pan with it. Poke small holes in the bottom using a fork to prevent bubbling. Return to the fridge for an additional 30-60 minutes, then place it in the freezer for the last 15 minutes before baking.

Step 4: Blind Bake the Crust
Preheat your oven to 180°C (350°F). Blind bake the pastry for 10 to 15 minutes until it is lightly golden. Set it aside while you prepare the filling.

Step 5: Sauté the Vegetables
Wash and thinly slice the leeks and brown onion. In a non-stick pan, heat the butter or olive oil over medium heat. Add the chopped leeks, sliced onion, and minced garlic, sautéing them together for about 5 minutes, until the onions turn translucent and the leeks soften. Remove from heat.

Step 6: Make the Filling
In a separate bowl, whisk together the eggs, heavy cream, salt, pepper, and optional cumin. Stir in the sautéed leeks and onions, then fold in the grated Gruyere cheese until balanced.

Once combined, pour the mixture over the pre-baked pastry shell.

You’ll want to bake this fantastic tart for another 25 to 35 minutes until the leeks are golden, and the filling has set.

Serving warm is a must! This beautiful tart pairs wonderfully with a simple green salad or a glass of crisp white wine, making it the perfect centerpiece for any gathering. Enjoy each slice and let it take you on a delicious journey!

Deliciously Moist Leek Tart with Gruyere and Onions Recipe

You Must Know About Moist Leek Tart with Gruyere and Onions

  • This amazing Moist Leek Tart with Gruyere and Onions offers more than just flavor; it makes meal prep a breeze.
  • You can easily customize the ingredients based on what you have on hand.
  • The vibrant colors and aromas make it visually stunning on any dinner table.
  • Perfect for grilling but versatile enough for baking or pan-searing.

Perfecting Moist Leek Tart with Gruyere and Onions Cooking Process

Start by preparing the pastry for blind baking while you sauté the leeks and onions. This efficient sequence helps you multitask and ensures everything is ready simultaneously, creating a perfectly baked tart.

Add Your Touch to Moist Leek Tart with Gruyere and Onions

Feel free to swap Gruyere for cheddar or feta for a different flavor profile. You can also experiment with herbs like thyme or add mushrooms for a more earthy twist to your tart.

Storing & Reheating Moist Leek Tart with Gruyere and Onions

Store leftovers in an airtight container in the fridge for up to three days. To reheat, pop it in the oven at 350°F until warmed through to maintain that delightful texture.

Chef's Helpful Tips for Moist Leek Tart with Gruyere and Onions

  • This amazing Moist Leek Tart with Gruyere and Onions offers more than just flavor; it makes meal prep a breeze.
  • You can easily customize the ingredients based on what you have on hand.
  • The vibrant colors and aromas make it visually stunning on any dinner table.
  • Perfect for grilling but versatile enough for baking or pan-searing.

Cooking the leeks until they are just translucent can ensure they don’t overcook in the oven. This preserves their flavor and texture.

Make sure your butter is very cold when making the pastry for that flaky texture. Room temperature butter will result in a crumbly tart.

Adding a pinch of nutmeg to the egg mixture can elevate the flavor profile of your tart, giving it a cozy, comforting taste.

It was during a laid-back Sunday brunch with friends that I first served this Moist Leek Tart with Gruyere and Onions. The compliments I received made it clear this dish was a keeper!

Deliciously Moist Leek Tart with Gruyere and Onions Recipe

FAQs About Moist Leek Tart with Gruyere and Onions

What is Moist Leek Tart with Gruyere and Onions?

Moist Leek Tart with Gruyere and Onions is a savory dish that combines the delicate flavors of leeks, the rich creaminess of Gruyere cheese, and the sweetness of sautéed onions. Encased in a flaky pastry shell, this tart is perfect for brunch, lunch, or a sophisticated dinner party. The custard-like filling is both satisfying and versatile, making it a favorite among home cooks and food enthusiasts alike.

How can I customize my Moist Leek Tart with Gruyere and Onions?

Customizing your Moist Leek Tart can turn it into a unique creation tailored to your taste. Consider swapping Gruyere cheese for other varieties like cheddar or feta for a different flavor kick. Adding fresh herbs, such as thyme or chives, can enhance the aromatics. For an earthier bite, try tossing in sautéed mushrooms. The beauty of this tart lies in its versatility; feel free to play with the ingredients!

What can I serve with Moist Leek Tart with Gruyere and Onions?

Serving suggestions for Moist Leek Tart include pairing it with a crisp salad or a side of roasted vegetables for a well-rounded meal. For a festive touch, a glass of white wine complements the rich flavors beautifully. You could also serve it alongside a refreshing herb-infused yogurt or sour cream dip that contrasts nicely with the tart’s creaminess. Don’t forget the crusty bread for those who love to savor every bite!

How do I store leftovers of Moist Leek Tart with Gruyere and Onions?

To store leftovers of Moist Leek Tart with Gruyere and Onions, let the tart cool completely before wrapping it in plastic wrap or placing it in an airtight container. You can keep it in the refrigerator for up to three days. For optimal texture when reheating, warm it in the oven at 350°F until heated through, ensuring that it retains its delightful flakiness and creamy interior. Enjoy your leftovers just as much as the first serving!

Conclusion for Moist Leek Tart with Gruyere and Onions

In conclusion, the Moist Leek Tart with Gruyere and Onions is a delectable dish that brings warmth and comfort to any meal. This savory tart, with its delightful filling and flaky crust, is easy to customize and perfect for any occasion. Whether you plan to serve it at brunch or as a main dish, this recipe is sure to impress family and friends alike, making it a staple in your kitchen repertoire. Enjoy every bite!

Moist Leek Tart with Gruyere and Onions

Deliciously Moist Leek Tart with Gruyere and Onions

This Moist Leek Tart with Gruyere and Onions is a savory delight, perfect for any occasion.
Prep Time 30 minutes
Cook Time 30 minutes
Resting Time 2 hours
Total Time 3 hours
Servings: 8 slices
Course: Lunch Recipes
Cuisine: French
Calories: 250

Ingredients
  

  • 180 gr Plain Flour
  • 1 pinch Salt
  • 90 gr Unsalted Butter, very cold
  • 60 ml Cold Water
  • 2 Leeks
  • 1 small Brown Onion
  • 30 gr Unsalted Butter, or Olive Oil
  • 0.5 teaspoon Minced Garlic
  • 2 large Eggs
  • 120 ml Heavy / Thickened Cream
  • 1 teaspoon Table Salt
  • 0.5 teaspoon Pepper
  • 1 teaspoon Ground Cumin optional
  • 35 gr Gruyere Cheese, grated

Equipment

  • Food Processor
  • Non-Stick Pan
  • Baking Pan
  • Oven

Method
 

  1. Place the Flour and Salt in the bowl of your food processor. Add the cold Butter cut into small cubes and blend until it forms small crumbs.
  2. Slowly add the cold Water, a little bit at the time and blending between each addition. Stop adding the water as soon as the dough comes together.
  3. Transfer over a lightly floured sheet of baking paper and bring together into a disk. Place a second sheet of baking paper over it and roll the pastry into a large rectangle. Place in the fridge to rest for at least 1 hour.
  4. Remove the two layers of baking paper and line your baking pan with the Shortcrust Pastry. Poke small holes all over the pastry with a fork, then place back in the fridge for 30 minutes to 1 hour. Put the Pastry in the freezer for the last 15 minutes before baking it.
  5. Blind Bake the Pastry for 10 to 15 minutes in an oven preheated on 180'C/350'F, then set aside while you prepare the filling.
  6. Wash the Leeks and chop into thin slices. Thinly slice the Brown Onion.
  7. Place the Butter into a non-stick pan on medium heat. When hot, sauté the chopped Leeks, sliced Onion and Minced Garlic for about 5 minutes until the onions are translucent. Remove from the stove.
  8. In a separate bowl, whisk together the Eggs, Heavy Cream, Salt, Pepper and Cumin. Add the pre-cooked Leeks/Onion and mix in the Grated Gruyere.
  9. Pour over the pre-baked pastry and bake for another 25 to 35 minutes. The leeks should be lightly golden and the filling set. Serve warm.

Nutrition

Serving: 1sliceCalories: 250kcalCarbohydrates: 20gProtein: 8gFat: 17gSaturated Fat: 10gPolyunsaturated Fat: 1gMonounsaturated Fat: 6gCholesterol: 75mgSodium: 450mgPotassium: 200mgFiber: 1gSugar: 1gVitamin A: 500IUVitamin C: 5mgCalcium: 150mgIron: 1mg

Notes

To elevate flavor, consider adding a pinch of nutmeg to the egg mixture.

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