Parmesan Truffle Fries with Truffle Mayonnaise

These Parmesan truffle fries are super simple to make in only 30 minutes, and served with the most AMAZING truffle mayonnaise dipping sauce.

Guys. Truffle fries are awesome. You can even make them using this air fryer frozen french fries recipe!

The truffle seasoning gives the fries this absolutely amazing earthy flavor, and the duck fat....oh that wonderfully rich duck fat...crisps the fries up, while the Parmesan cheese adds the perfect amount of umami flavor.

And the smell of baking truffle fries....good god is it incredible. I'm actually drooling a bit just sitting here writing about it. The truffle gives them the most incredible earthy flavor, like we get in our favorite truffle risotto and truffle mashed potatoes.

These fries go perfect with this sous vide venison too!

What are truffle fries?

Truffle fries are thin cut fries (like shoestring fries) baked or fried until crispy, then drizzled with truffle oil or sprinkled with truffle seasoning. They are often also sprinkled with Parmesan cheese and other seasonings. 

This homemade truffle fries recipe bakes store bought shoestring fries with truffle seasoning and duck fat until crispy. Then truffle oil and Parmesan cheese are sprinkled on top.

Why this crispy Parmesan truffle fries recipe works

• We use frozen french fries, which makes this a super quick and east recipe.
• Using truffle zest helps keep the cost down and makes this an economical recipe.
• Using Parmesan and truffle oil makes these ultra earthy and delicious. The Parmesan cheese adds the perfect umami flavor.
• The fries are served with an incredible truffle garlic aioli that is ultra easy to make. It's the perfect finger food.

Ingredients

The full list of ingredients and amounts is included in the recipe card at the bottom of the post.

The best part about these fries is that you can use frozen shoestring fries. Just regular French fries will work great for this recipe.

OR...you can do this with parsnips and make baked parsnip fries!

Duck fat. My opinion is you should always have some duck fat in your pantry. It's so good on so many things. It's helps to make crispy fries and turns them golden-brown.

Fresh grated Parmesan cheese is a must to get the best flavor - that grated kind in the green container that shall remain nameless is not my thing. Nutty Parmesan is an absolute must for this recipe.

It is optional to use truffle oil - you don't have to, the fries have a great earthy flavor without them - but it can infuse the fries with an extra layer of earthiness that I love. But be careful, many truffle oils are not made with real truffles so I recommend using Truff or Terosso. You can use white truffle oil or black truffle oil.

What are truffles?

Truffles are fungus, similar to mushrooms (some consider them mushrooms but they are not) that grow near tree roots. There are white and black versions. I use black in this recipe.

The reason they are so expensive is due to the work and time it takes to harvest them. Truffles grow underground so they are not easy to find!

Now, real whole truffles are super expensive, so I found this amazing truffle "zest" that I absolutely love (it's made with real truffles, don't worry). Is it exactly the same of fresh grated truffles? No. But it is reasonably priced, has amazing flavor, and can be bought right on Amazon.

If you're a truffle fan, you MUST try this black truffle pasta!

Substitutions and variations

• Sprinkle additional truffle zest over the fries after baking for even more truffle flavor.
• Add garlic powder or fresh minced garlic to make these garlic fries. Be careful if using fresh garlic as it can burn easily. Other seasonings like paprika work well also.
• You can grate fresh whole truffle over the fries to make this a decadent dish.
• You can also use Romano, or any hard gratable cheese in place of the Parmesan.
• Add dried fresh herbs like parsley or thyme for garnish. You can also garnish with fresh parsley or chives if you'd like.
• Substitute avocado oil, olive oil or any oil for the duck fat if needed.
• You can make homemade french fries if you prefer, but I was trying to make this a quick and easy recipe.

Step by step instructions to make truffle fries

1. Preheat oven to 425°F (or follow instructions on the package). Remove them from the bag and spread the fries evenly in a single layer on a sheet tray or baking sheet.

2. Drizzle them with melted duck fat, salt and truffle seasoning. Toss to coat the fries. Bake for 20-30 minutes, flipping halfway through.

3. Once perfectly golden and crispy on the edges, remove the cooked fries from the oven, sprinkle with Parmesan cheese, a drizzle of truffle oil and serve with your truffle mayonnaise. You can also serve these delicious fries with ketchup if you'd like.

How to make truffle mayonnaise

Mix the ingredients in a bowl. Done. LOL. Easy right?

Check out these other ideas for using truffle mayonnaise:

• It is awesome on sandwiches - try it on this sous vide roast beef sandwich.
• Dip these crispy roasted potatoes in it.
• Cheesy garlic roasted asparagus can be drizzled with the mayonnaise...it goooood. It would be great on any roasted vegetable.
• Dip these oven fried squash coins in it.
• Spread it on this bison burger or even these sous vide hamburgers.

Expert tips

1. Make sure the fries are spread out evenly on the baking sheet so they cook evenly.
2. Cover the baking sheet with parchment paper or aluminum foil for an easy cleanup.
3. Stir the fries halfway through to get even browning and crispier fries.
4. Sprinkle the Parmesan cheese and the truffle oil on AFTER the fries have finished baking. Neither are meant to be baked with the fries.
5. The truffle oil at the end is optional - you can leave it out if desired, but your fries won't have as much truffle flavor.

More potato side dish recipes

If you love this recipe, please leave a star rating and a comment below and let us know your favorite thing about it. We'd also love to connect on Instagram! Follow us at @went_here_8_this for awesome recipes and all sorts of fun food stuff 🙂