Golden Gruyere Tartlets with Caramelized Onion and Mushroom

Recipe Introduction

Quick Hook

Ever get a craving for something fancy but still comforting? Our Caramelized Onion, Mushroom And Gruyere tartlets are exactly that. Sweet onion, earthy mushrooms, and nutty Gruyere, what is not to love?

Brief Overview

These little gems are inspired by classic french cuisine. They are individual servings, perfect for an elegant appetizer or brunch.

While not super simple, they're totally achievable. These Mini Savory Tarts yield twelve delicious pieces.

Main Benefits

Mushrooms are a fantastic source of vitamin D. These tartlets are perfect for a fancy Mushroom Brunch . Honestly, what makes this recipe special is the sheer explosion of flavor in every bite!

Ready to get started with the dough?

We will need 1 1/4 cups of flour, plus more for dusting. Don't forget a half a teaspoon of salt.

Cut a 1/2 cup of very cold butter into small cubes. Finally, get 1/4 cup of ice water. Chilling time for at least 15 minutes is a must for the dough.

For the onion, grab 2 large yellow onions, and slice it thinly.

Golden Gruyere Tartlets with Caramelized Onion and Mushroom Recipe Card

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Preparation time:30 Mins

Cooking time:35 Mins

Servings:12 tartlets

Ingredients:

• 1 1/4 cups (150g) all-purpose flour, plus more for dusting
• 1/2 teaspoon (2.5g) salt
• 1/2 cup (113g) unsalted butter, very cold, cut into small cubes
• 1/4 cup (60ml) ice water
• 2 tablespoons (30ml) olive oil
• 2 large yellow onions, thinly sliced (about 2 cups)
• 1 tablespoon (15ml) balsamic vinegar
• 1/2 teaspoon (2.5g) salt
• 1/4 teaspoon (1.25g) black pepper
• 1 tablespoon (15ml) olive oil
• 8 ounces (227g) cremini mushrooms, sliced
• 1 clove garlic, minced
• 1/4 teaspoon (1.25g) dried thyme
• Salt and pepper to taste
• 1 cup (100g) Gruyere cheese, shredded
• 1 large egg, beaten (for egg wash)
• Fresh thyme sprigs, for garnish (optional)

Instructions:

• Make the Dough: Combine flour and salt in a food processor. Add cold butter and pulse until mixture resembles coarse crumbs. Gradually add ice water, pulsing until dough just comes together. Wrap in plastic wrap and chill for at least 15 minutes.
• Caramelize the Onions: Heat olive oil in a large skillet over medium-low heat. Add sliced onions, salt, and pepper. Cook, stirring occasionally, until onions are deeply golden brown and softened (about 30-40 minutes). Stir in balsamic vinegar during the last few minutes. Remove from heat and set aside.
• Prepare the Mushroom Filling: Heat olive oil in a skillet over medium heat. Add sliced mushrooms and cook until softened and browned, about 8-10 minutes. Add minced garlic and dried thyme; cook for 1 minute more. Season with salt and pepper. Remove from heat and set aside.
• Assemble the Tartlets: Preheat oven to 375°F (190°C). On a lightly floured surface, roll out the dough to about 1/8-inch thickness. Use a cookie cutter or knife to cut out 4-inch circles (or larger, depending on your muffin tin size).
• Fill the Tartlets: Gently press each dough circle into a muffin tin cup. Sprinkle a layer of shredded Gruyere cheese into the bottom of each tartlet. Top with a spoonful of caramelized onions, followed by a spoonful of the mushroom mixture. Add more Gruyere.
• Bake the Tartlets: Brush the edges of the tartlets with beaten egg wash. Bake for 25-30 minutes, or until the crust is golden brown and the cheese is melted and bubbly.
• Cool and Serve: Let the tartlets cool slightly in the muffin tin before transferring them to a wire rack to cool completely (or serve warm). Garnish with fresh thyme sprigs, if desired.

Nutrition Facts

Calories:250 calories

Fat:15g

Fiber:2g

Recipe Info

Category:Appetizer

Cuisine:French

Sweet and Savory Sensations: Why You'll Love These Caramelized Onion Tartlets

The aroma alone will transport you to a cozy French bistro. These Mushroom Tartlet Appetizer are sophisticated, easy to customize, and incredibly delicious. The combination of sweet and savory is just divine.

I remember the first time I made these. My crust was a disaster ! So, take your time with the dough.

A Touch of Elegance: Perfect for Any Occasion

These Savory Mushroom Tartlets are ideal for parties, potlucks, or a simple fancy meal. The Caramelized Onion, Mushroom And Gruyere is incredible. Think about serving it with a crisp white wine.

Don’t Skimp on the Caramelization!

Seriously, don't rush the onions. The longer you cook them, the sweeter and more flavorful they become. It takes time.

A good 30- 40 minutes low and slow to get those beauties. Once your dough is rolled out, bake the tartlets for 25- 30 minutes

What will you serve them with?

Ingredients & Equipment for Perfect Tartlets

Alright, let's talk ingredients! Making these Caramelized Onion, Mushroom and Gruyere tartlets isn't hard. But having the right stuff makes all the difference.

You know? Think of it like building a house, you need great materials and tools!

Main Players in Our Mushroom Tartlet Recipe

Dough Time!

• 1 1/4 cups (150g) all-purpose flour. Plus extra for dusting.
• 1/2 teaspoon (2.5g) salt. A pinch is all you need.
• 1/2 cup (113g) unsalted butter, very cold and cubed. Seriously, ice cold.
• 1/4 cup (60ml) ice water. Don't skip the ice!

Quality check? The butter has to be cold. Trust me on this one. It’s the secret to a flaky crust.

Caramelized Onion Magic

• 2 tablespoons (30ml) olive oil.
• 2 large yellow onions, thinly sliced. About 2 cups once sliced.
• 1 tablespoon (15ml) balsamic vinegar.
• 1/2 teaspoon (2.5g) salt.
• 1/4 teaspoon (1.25g) black pepper.

For the onions, go for firm ones. Mushy onions won’t caramelize right!

Mushroom Filling Fun

• 1 tablespoon (15ml) olive oil.
• 8 ounces (227g) cremini mushrooms, sliced.
• 1 clove garlic, minced.
• 1/4 teaspoon (1.25g) dried thyme.
• Salt and pepper to taste.

Mushrooms should be firm, not slimy.

Assembly Time!

• 1 cup (100g) Gruyere cheese, shredded.
• 1 large egg, beaten. This is for that golden egg wash.
• Fresh thyme sprigs, for garnish (optional).

Seasoning Notes: Elevating the Mushroom Brunch

Thyme and garlic are essential here. They play so nicely with the earthy mushrooms. Balsamic vinegar adds a sweet tang to the onions.

If you’re out of balsamic, a dash of red wine vinegar works too.

For a little more kick, a pinch of red pepper flakes in the mushroom filling? Oh my gosh!, life changing

Essential Equipment for Mini Savory Tarts

• Food processor (optional).
• 12-cup muffin tin.
• Rolling pin.
• Baking sheet.
• Parchment paper.

Don't have a food processor? No worries! Use a pastry blender or just your hands to cut in the butter.

I did it that way for years! A rolling pin is ideal for flattening the dough. You can even use a clean wine bottle in a pinch.

These Savory Mushroom Tartlets are so worth the effort. Whether you call them Mushroom Tartlet Appetizer or Caramelized Onion Tartlets , the first bite will be heaven! You'll want to make these again and again, honestly.

The Secret to Unforgettable Golden Gruyere Tartlets

Honestly, who doesn’t love a good tartlet? And these aren't just any tartlets. These Caramelized Onion, Mushroom And Gruyere beauties are a cut above.

They're seriously impressive for a brunch, or when hosting a fancy afternoon tea, you know?

Prep Steps: Getting Your Ducks in a Row

First things first, mise en place is your best friend here. Measure out all your ingredients. Chop those onions and mushrooms.

Get the butter super cold. Seriously, cold butter is key for that flaky crust we all crave. And of course, wash your hands.

Safety first!

Baking Brilliance: Step-by-Step

1. Make the dough. Pulse flour, salt, and cold butter in a food processor. Add ice water until it just comes together. Chill for 15 minutes .
2. Caramelize the onions. Cook sliced onions in olive oil over medium-low heat for 30- 40 minutes . Stir in balsamic vinegar last few minutes.
3. Cook the mushrooms. Sauté sliced mushrooms in olive oil, add garlic and thyme. Cook for 8- 10 minutes . Season with salt and pepper.
4. Assemble the tartlets. Roll out the dough and cut out circles. Press into muffin tins.
5. Fill ‘em up! Layer Gruyere, caramelized onions, and mushrooms in each tartlet. Top with more Gruyere.
6. Bake! Brush with egg wash and bake at 375° F ( 190° C) for 25- 30 minutes .

Pro Tips for Tartlet Perfection

Want to take your Mini Savory Tarts to the next level? First of all, don't rush the caramelizing process. Low and slow is the way to go.

Also, you can blind bake the crusts for about 10 minutes before adding the filling for extra crispness. This helps especially if you are making Mushroom Brunch .

One mistake to avoid? Overfilling the tartlets. Soggy bottoms are the enemy! The dough can be made ahead and stored for up to 2 days in the fridge.

This is great for Caramelized Onion Tartlets . If you're looking for a Mushroom Tartlet Appetizer to impress, this is it!

Recipe Notes: Your Mushroom Tartlet Recipe Cheat Sheet

Alright, let's talk shop about these gorgeous Caramelized Onion, Mushroom And Gruyere tartlets. Honestly, they're pretty straightforward, but a few insider tips can take them from 'good' to 'Oh my gosh!'

Serving Suggestions for the Mini Savory Tarts

Presentation is everything, right? When serving, think about adding a sprig of fresh thyme on top. It just looks super fancy.

The way that you should serve these Mushroom Tartlets is on a nice platter with some fresh greens. These Caramelized Onion Tartlets also pair really well with a light salad or even a simple tomato soup.

Grab a crisp white wine like Sauvignon Blanc too!

Storage Tips for your Mushroom Tartlet Appetizer

So, you've got leftovers? No worries. Keep them in the fridge for up to 3 days in an airtight container.

If you want to freeze these Savory Mushroom Tartlets , do it before baking. Wrap them individually in plastic wrap and then put them in a freezer bag.

They’ll last for up to a month. When reheating, pop them in a 350° F ( 175° C) oven until they are warmed through, this may take about 10 to 15 minutes.

They can then be warmed in the microwave.

Variations: Spicing up Your Gruyere Tart Recipe

Feel like getting a bit creative? Swap out the Gruyere for Swiss cheese. It is still super yummy and melty.

You could also add some crumbled cooked bacon to the Onion and Mushroom Quiche for a meaty kick. For a vegetarian option, consider using a vegetarian-friendly hard cheese.

You know? If it's autumn, throw in some butternut squash. Delicious !

Nutrition Basics

Each of these Mushroom Brunch goodies clocks in around 250 calories. They are packed with protein from the cheese and the mushrooms.

They also have some healthy fats from the butter in the crust. Remember, these are rough estimates. This will depend on the exact ingredients you use.

Seriously, get in the kitchen and give these Appetizer Tartlets a try. You will absolutely smash it! They are easier than you think. Enjoy!