Apple French Onion Soup Recipe (2024)

A good French Onion Soup recipe will warm your heart and soul. Just seeing the gooey cheese on top makes me excited. In fact, I usually burn my mouth. I just can’t wait!

Apple French Onion Soup Recipe (1)

What's In This Article

Apple French Onion Soup combines a robust French Onion Soup Recipe using sweet apples for flavor and texture. Top with crunchy garlic croutons and gooey cheese.

French Onion Soup seems simple enough, but is actually pretty sophisticated if you want to do it right. Much more than merely tossing a packet of onion soup mix into a pot of boiling water.

The base, of course is a beef broth or stock. Stocks alone are tricky, but a homemade stock can make or break French Onion Soup.

Simply pouring it out of a cardboard container from the store will give you flavor, but not the rich, velvety texture you crave.

Of course, if you wanted to make an easy French Onion Soup, you could totally cut the corner and buy a good pre-made beef broth, But if you are looking to make one yourself, check out my Best Beef Broth for tips and tricks.

Apple French Onion Soup Recipe (2)

The second layer of complexity for French Onion Soup is caramelized onions. Caramelized onions take time, about an hour or so and are not the same as simple sauteed onions.

They need to be cooked low and slow to turn into a golden and sweet brown. These can be made days, even weeks ahead of time and frozen until you need them. Check out my tips and tricks for caramelized onions.

Apple French Onion Soup Recipe (3)

Next up, the croutons! Don’t feel obligated to get the perfect French Onion Soup bread, use whatever you have. For this batch, I cut up some leftover Italian sub rolls.

I’ve even used sourdough and brioche. Just baste with garlic butter and make sure to get a good crisp on it. You’ll need it so it doesn’t just dissipate in the broth. You can also use olive oil if you prefer no garlic in your soup.

Apple French Onion Soup Recipe (4)

What type of cheese is “French Onion Soup cheese?” You can use a variety of cheeses and even a mix if you want! The typical ones are provolone, Swiss, Gruyere and Parmesan.

I typically use what I have on hand. Shredded cheese sinks into the broth, but melts better, while a slice of cheese will stay floating right on top, but not sink.

Apple French Onion Soup Recipe (5)

So makes my French Onion Soup different? Apple! A week ago I had an amazing bowl of French Onion Soup at a local restaurant and the added ingredient that really made it pop was the addition of apples.

And what a surprise lurking under the cheese! Guest raved and wondered why no one thought of this before. Pure genius!

his French Onion Soup is adapted from the masterful Julia Childs. Perfect in just about every way, it is finished with a splash of cognac. Feel free to omit it to make other adaptations as needed.

Apple French Onion Soup Recipe (6)

French Onion Soup Crocks– these are oven safe bowls perfect for serving any soup, especially those with melted cheese. I personally like the old school brown porcelain with a handle. It makes it easier to transfer from the baking sheet to a serving plate.

Dutch Oven– every kitchen should have one! They are heavy. They are expensive. They are worth it!

Micrograter– A small kitchen utensil you find you use a lot more than you expected!

If you liked our Apple French Onion Soup, here are more recipes that use caramelized onions!

  • Caramelized Onion and Garlic Dip
  • Caramelized Onion and Roast Beef Sandwiches
  • French Onion Chicken Casserole

And more delicious soup recipes:

  • Easy Lamb Stew
  • Crockpot Chicken Noodle Soup
  • Cabbage Diet Soup
  • Wild Rice Chicken Soup
  • Black Bean Soup
Apple French Onion Soup Recipe (7)

Apple French Onion Soup

4.55 from 11 votes

Apple French Onion Soup combines a robust French Onion Soup Recipe using sweet apples for flavor and texture. Top with crunchy garlic croutons and gooey cheese.

Prep Time: 1 hour hr 30 minutes mins

Total Time: 1 hour hr 30 minutes mins

Servings: 8

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Ingredients

French Onion Soup:

  • 3 tablespoons butter
  • 2 cups caramelized onions
  • 2 red apples cored, peeled and diced into 1 inch cubes *
  • 3 tablespoons flour
  • 6 cups BEST beef stock
  • 1 cup dry red wine
  • 2 bay leaves
  • 1/2 teaspoon rubbed sage
  • 1/2 teaspoon fine sea salt
  • 1/2 teaspoon black pepper
  • 16 slices Swiss cheese
  • 1 cup Parmesan cheese grated
  • 1/2 raw yellow onion grated
  • 2-3 tablespoons cognac optional

Croutons:

  • 8 inch slices French bread 1thick
  • 1/2 cup butter melted
  • 1 tablespoon garlic powder

Instructions

  • Heat a large Dutch oven or sauce pan over medium heat. Melt butter. Add caramelized onions and diced apples to the butter. Cook for an additional 5 minutes, stirring periodically to prevent burning. Apples should be slightly tender, but not mushy and not hard.

  • Add flour to mixture, allowing it to brown, forming a roux along with the caramelized onions and apples.

  • After flour browns slightly, add BEST beef stock, dry red wine, bay leaves, rubbed sage, fine sea salt and freshly ground black pepper. Stir and bring to a low simmer. Never bring to a full boil.

  • Simmer for a minimum of 30 minutes, but no longer than 1 hour (the apples will start to lose their texture).

  • Meanwhile, prepare the croutons by preheating the oven to 325 degrees. Baste with melted butter mixed with garlic powder and then bake for 15 minutes or until brown and toasty.

  • Add grated onion, cognac and Parmesan cheese to the soup. Remove the bay leaves. Give it a quick stir.

  • Place Onion Soup Crocks onto a rimmed baking sheet. Top each with a croutons and 2 slices of Swiss cheese. Make sure the edges of the bread are covered with cheese to prevent the bread from burning.

  • Broil on high until cheese melts.

  • Remove, garnish with additional fresh sage, if desired, and serve immediately.

  • If you’ve tried this recipe, come back and let us know how it was!

Nutrition

Calories: 472 kcal, Carbohydrates: 12 g, Protein: 20 g, Fat: 34 g, Saturated Fat: 22 g, Cholesterol: 101 mg, Sodium: 594 mg, Potassium: 152 mg, Fiber: 1 g, Sugar: 3 g, Vitamin A: 1050 IU, Vitamin C: 4.4 mg, Calcium: 609 mg, Iron: 0.5 mg

Author: Jessica Formicola

Calories: 472

Course: Appetizer, Main Course, Main Dish, Soup

Cuisine: American, French

Keyword: french onion soup recipe

Did you make this recipe?I’d love to see your recipes – snap a picture and mention @savoryexperiments or tag #savoryexperiments!

Apple French Onion Soup Recipe (2024)

FAQs

How do you deepen the flavor of French onion soup? ›

A few sprigs of thyme and a bay leaf elevate the soup even more, but I take it a step further, adding a splash of fish sauce for complexity and depth—don't worry, it won't taste fishy—and a hit of cider vinegar to balance some of that oniony sweetness.

What is the difference between onion soup and French onion soup? ›

What is the Difference Between Onion Soup and French Onion Soup? French onion soup is always made with beef stock. Other onion soups can be made with chicken, vegetable, or beef stock. Additionally, French onion soup typically contains wine or sherry, which isn't typical or necessary in other onion soups.

What broth is French onion soup made of? ›

What Is French Onion Soup? French onion soup, or soupe à l'oignon gratinée, is a classic French dish made with caramelized onions and beef stock or broth. The soup is topped with bread and cheese, then gratinéed to rich, gooey perfection. It's traditionally served in a ramekin or a ceramic crock with a handle.

Why do you put baking soda in French onion soup? ›

The caramelized onions for this soup cook more quickly due to a pinch of baking soda but still have that deep, slow-cooked flavor. Topping the soup with hot, cheesy toasts prepared while the soup simmers, eliminates the need to bake the soup in specialty French onion soup bowls.

What can I add to soup for depth of flavor? ›

Foods that have a great deal of acidity, like lemon juice, vinegar, white wine, and tomato puree, can help liven up the flavor of bland-tasting bone and other broths. "The acidity of these ingredients works to complement and enhance the broth's flavors, not mask it.

Why does my French onion soup taste sour? ›

Soup can become acidic due to a variety of factors such as using acidic ingredients like tomatoes, vinegar, or lemon juice, overcooking certain vegetables, or adding too much of ingredients like wine or citrus. It can also be caused by fermentation or spoilage of soup over time.

Does it matter how you cut onions for French onion soup? ›

Also, cutting pole-to-pole results in more uniformly sized slices, both in width and length. For certain cooking preparations using onions, such as French onion soup (our recipe here), this means more manageable and uniform cooking and browning.

Should French onion soup be thick or thin? ›

Made slightly thicker than most watered down soups because every mouthful NEEDS a slightly thickened texture to compliment the caramelized onions.

Why is French onion soup so expensive? ›

First, French onion soup calls for a ton of onions. While onions aren't expensive, there's a lot of labor involved in halving, peeling, and slicing 10, 12, 50, or one billion onions (I don't know how much soup you make).

Why does French onion soup taste so good? ›

French onion soup is the ultimate comfort food. Onions get slowly cooked until sweet and caramelized, then simmered in rich broth until they're practically falling apart. To finish it off, toasted bread is added to give it that lovable crisp-gone-soggy texture and a generous amount of Gruyère cheese is melted on top.

What is the best wine to use in French onion soup? ›

For French onion soup, consider reaching for a red wine with spice notes, such as Cabernet Sauvignon or Pinot Noir. These varietals add a subtle kick of pepper and earthiness that play well with the soup's rich flavors.

What are the best onions for soup? ›

Yellow is the ideal variety for caramelizing. When you are sauteing onions to build flavor as a base for your dish (soup, tomato sauce, you name it), the yellow onion is your friend. That being said, white onions are a totally acceptable substitute for yellow, especially if you're cooking them.

Why do you put lemon juice in soup? ›

In this case, however, the lemon provides more of a flavor undertone that enhances other seasonings like thyme, parsley, and turmeric. According to trained chef Leetal Arazi, who spoke with Real Simple, you can bring a "zesty flavor" to your soup simply by adding lemon.

How do you thicken French onion soup? ›

The easiest way to thicken your French onion soup is with flour. You can also use cornstarch if you don't have any flour. Remember to never add the flour or cornstarch directly to the soup – otherwise you run the risk of it clumping.

Why do people put lemon in soup? ›

Lemons are a chicken soup game changer. Why? They brighten up and balance the salty, rich flavors of the dish, and make all of the ingredients come into line.

How to fix bland French onion soup? ›

Blend the onions into the bland broth. Meanwhile, deeply caramelize more onions. Deglaze the pan of onions with white wine. Add the broth back to the onions and bring to a simmer with several sprigs of fresh thyme.

How to doctor up canned French onion soup? ›

Infusing the soup with a richer taste is as easy as quickly sauteing crushed garlic before pouring the soup in. Some soft, buttery garlic sauteed in earthy olive oil is the perfect addition to enrich canned French onion soup.

How do you make soup taste stronger? ›

Perk up a Bland Soup With Simple Pantry Staples

Add a splash of vinegar (any kind!), or a squeeze of citrus. Chances are, you could use a little more salt. Go ahead—it's ok. Salt perks up flat flavors and helps balance out bitter-tasting ingredients.

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