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French Cheese + Caramelized Onion Crostini Trio

This post was created in partnership with the French Cheese Board. As always, all opinions are 100% my own.

Most people who know me are familiar with my love affair with cheese. No, it’s not just because I lived in Wisconsin for about a decade before heading to New York, but that certainly didn’t hurt.

I’ve been known to go into a restaurant and order a cheese plate before sharing cheese fondue for the main event. Maybe even follow it up with a slice of cheesecake if I’m feeling bold. Who’s judging?

So when I was invited to a cheese-centric cocktail party hosted at NYC’s French Cheese Board, I was beyond stoked to attend. And having a cheese-infused cocktail or 3 was something that I was thrilled to check off of my culinary bucket list!

A photo posted by Ashley Covelli (@bigflavors) on

I also met a new favorite cheese – this beautifully vibrant Mimolette. It looks like a big, dusty cannonball on the outside and is notoriously difficult to open. The rough, floral exterior gives way to a bright orange cheese that’s smooth and creamy with a sweet, butterscotch-y flavor.

I also learned that the appearance is due to tiny mites, and I am totally OK with that. They made that cheese phenomenally delicious, and I applaud their effort!

A photo posted by Ashley Covelli (@bigflavors) on

I loved the way all of the cheeses at the event were incorporated into both cocktails and hors d’oeuvres, and couldn’t wait to get my hands on some of my favorites from the evening to work with in my tiny kitchen.

A photo posted by Ashley Covelli (@bigflavors) on

For New Year’s Eve, I had planned on sampling the cheeses at home with some wine, followed by a round of deliciously cheesy appetizers and then dinner.

Let’s just say that we ended up loving the cheeses and apps so much that we ended up having that as our last dinner of the year.

I couldn’t have picked a better way to end 2015!

French Cheese Trio

The 3 cheeses I chose to work with were the Mimolette, Bleu D’Auvergne (a wonderfully spicy, pungent, creamy blue cheese) and Raclette (a smoky, nutty cheese that’s known for its silky smooth texture and meltability).

I wanted to do something that was simple enough yet showcased each cheese in a different way. I didn’t want to be stress cooking my last meal of the year.

So I set out with my biggest cast iron skillet and made a giant batch of caramelized onions and got a few different toppings together while they were cooking away.

I’m not going to be one of those people who lies about how long it really takes to make deeply caramelized onions. You’re going to need an hour, minimum (and if you’re like me and made a way too big batch, you’ll need 2 hours because the pan was a bit crowded). But the time is mostly unattended, stirring occasionally, sipping some wine and chatting away with whoever happens to be in the kitchen with you that day.

Your efforts will be rewarded. Trust.

French Cheese + Carmalized Onion Crostini Trio

Once the onions were done, I toasted up a baguette and got to mixing and matching the perfect combinations of toppings.

The Bleu D’Auvergne was smeared onto a few toasted slices, topped with caramelized onions, aged balsamic and fresh parsley.

The rest of the baguette slices got rubbed with garlic while still hot. Half of those got caramelized onions topped with Raclette, melted, and finished with green onions. The other garlicky baguette slices got caramelized onions topped with Mimolette, melted, and finished with a thin slice of apple and fresh thyme.

French Cheese + Carmalized Onion Crostini Trio

Both my husband and I were floored by how great each combination was on its own. Neither of us could pick a favorite.

It was a seriously delicious meal – one I’ll gladly repeat any time!

Are you celebrating National Cheese Lovers Day? Let me know what your favorites are in the comments below!

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Overhead view of 3 types of crostini on a cutting board.

French Cheese + Caramelized Onion Crostini Trio

  • Author: Big Flavors from a Tiny Kitchen - Ashley Covelli
  • Prep Time: 10 minutes
  • Cook Time: 75 minutes
  • Total Time: 1 hour 25 minutes
  • Yield: 4-6 Servings 1x
  • Category: Appetizer
  • Method: Stovetop
  • Cuisine: French


Celebrate National Cheese Lovers Day with these easy, elegant appetizers made with some of my favorite French cheeses!


  • 2 tablespoons peanut oil
  • 3 pounds sweet onions, sliced 1/8-inch thick
  • 1/4 teaspoon kosher salt
  • 1 fresh baguette, sliced on a bias about 1/2-inch thick
  • Olive oil


  • Bleu D’Auvergne
  • Mimolette
  • Raclette


  • Whole clove garlic, peeled, tip sliced off to expose the flesh
  • Aged balsamic
  • Fresh parsley, chopped
  • Fresh thyme, leaves stripped
  • Apple, thinly sliced
  • Green onions, chopped


  1. Heat oil in a large, heavy skillet (preferably cast iron) over medium-low heat. Add onions, sprinkle with salt and let cook nice and slow, stirring occasionally, until they are deeply golden brown (this will take at least an hour, maybe even 2 – see my notes in the post above about the quantity of onions).
  2. Once caramelized, remove onions from heat and preheat your broiler. Arrange baguette slices in a single layer on a baking sheet (you may need to do this in 2 batches, depending on the size of your baguette). Brush the top side of each slice with a little olive oil and place in the oven. Place under the broiler and cook until golden on one side. Remove from the oven, flip each slice over and brush the top of each with another thin layer of oil. Pop back into the broiler and cook until golden.
  3. Remove 1/3 of the baguette slices to a platter. Rub each of the remaining 2/3 with the garlic clove, letting the garlic grind into the toasted bread while still warm.
  4. For the Bleu D’Auvergne crostini: use a knife to smear a bit of the cheese over each slice of the toasted baguette that was placed on the platter (not the ones with garlic rubbed on top). Top each with a little pile of caramelized onions, a drizzle of aged balsamic and a sprinkle of fresh parsley.
  5. For the Mimolette and Raclette crostini: still working on the baking sheet, top each garlicky baguette slice with a pile of caramelized onions. Place a slice of Mimolette on top of half of those, and a slice of Raclette on the remaining half. Place the tray back under the broiler until the cheese gets melty and bubbly, being careful not to burn. Remove the crostini to the serving platter.
  6. Press a slice of apple into the top of each Mimolette crostini, then sprinkle with thyme leaves. Sprinkle each of the Raclette crostini with green onions. Enjoy!


  • Serving Size:
  • Calories: 598
  • Sugar: 30 g
  • Sodium: 938.5 mg
  • Fat: 9.8 g
  • Saturated Fat: 1.7 g
  • Carbohydrates: 111.5 g
  • Fiber: 8.7 g
  • Protein: 19.2 g
  • Cholesterol: 0 mg

Keywords: crostini, easy appetizer, caramelized onions

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Ashley Covelli is a food photographer, recipe developer, and culinary instructor based in Ossining, New York. She loves helping people become enthusiastic and adventurous in the kitchen so that they can build skills and confidence to cook for themselves and their loved ones. She can almost always be found with at least 3 different beverages within arm's reach.

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