Ingredients
Scale
- 2 tablespoons butter (use vegan butter if needed): Butter provides richness and helps in the initial caramelization of the onions. For a vegan option, a high-quality vegan butter stick works beautifully, ensuring a similar creamy texture and flavor.
- 2 tablespoons olive oil: Olive oil is added alongside butter to raise the smoke point of the cooking fat, preventing the butter from burning as you caramelize the onions over a longer period. It also adds a subtle fruity note to the base.
- ½ teaspoon salt, divided (or more to taste): Salt is crucial for drawing out moisture from the onions and enhancing their sweetness during caramelization. It’s divided, with a portion added at the beginning to the onions and the rest used to season the dish throughout the cooking process. Always taste and adjust seasoning at the end.
- 1.1 lb (500g) yellow onion, thinly sliced (~2 large onions): Yellow onions are the star of the show. They are the classic choice for French Onion Soup due to their balanced flavor profile – not too sharp, not too sweet – and their excellent caramelizing capabilities. Thinly slicing them ensures they cook down evenly and caramelize beautifully. About two large onions will yield the perfect amount for this recipe.
- 4 cloves of garlic, minced: Garlic adds aromatic depth and a savory counterpoint to the sweetness of the caramelized onions. Minced garlic infuses its flavor throughout the dish, complementing the thyme and cheese beautifully.
- 2 teaspoons fresh thyme, chopped (or 1 teaspoon dried thyme): Fresh thyme brings a bright, herbaceous, and slightly lemony note that is quintessential in French Onion Soup. If fresh isn’t available, dried thyme can be substituted, but use half the amount as dried herbs are more concentrated.
- 2 tablespoons all-purpose flour (use rice flour or gluten-free flour if needed): Flour acts as a thickening agent, creating a creamy sauce as it cooks with the broth and wine. For a gluten-free version, rice flour or a gluten-free all-purpose blend works perfectly without altering the taste significantly.
- ½ cup dry white wine: Dry white wine, such as Sauvignon Blanc, Pinot Grigio, or a dry Chardonnay, adds acidity and complexity to the sauce. It deglazes the pan, lifting up all the flavorful browned bits from the bottom and contributing a layer of depth. If you prefer to omit alcohol, you can use extra vegetable broth instead, although the wine does add a distinct nuance.
- 2 teaspoons low-sodium soy sauce: Soy sauce might seem like an unusual addition to French Onion Soup Pasta, but it’s a secret weapon for enhancing the savory umami flavors. Low-sodium soy sauce adds depth without making the dish taste overtly “soy-saucy.” It’s a fantastic way to boost the overall richness.
- 6 cups hot vegetable broth: Vegetable broth forms the liquid base of the sauce and cooks the pasta directly in it, infusing the pasta with flavor and creating a naturally creamy consistency as the pasta releases starch. Using hot broth helps to maintain the cooking temperature and speeds up the process. Choose a good quality vegetable broth for the best flavor.
- 12 ounces (340g) short-cut pasta (I use small conchiglie, use gluten-free pasta if needed): Short-cut pasta shapes like conchiglie (shells), penne, fusilli, or cavatappi work best in this recipe. Their shapes are excellent for capturing the creamy sauce. Conchiglie, with their shell-like shape, are particularly good at holding pockets of sauce. For a gluten-free option, there are many excellent gluten-free pasta varieties available made from rice, corn, or quinoa.
- ¼ teaspoon freshly cracked black pepper (or more to taste): Black pepper adds a touch of spice and enhances the overall flavor profile. Freshly cracked black pepper is always preferred for its brighter, more aromatic flavor.
- 4 oz (115g) Gruyère cheese, shredded (use vegan mozzarella if needed): Gruyère cheese is the classic cheese for French Onion Soup. It melts beautifully and has a nutty, slightly sweet, and complex flavor that complements the caramelized onions perfectly. For a vegan alternative, good quality vegan mozzarella shreds or a vegan Gruyère-style cheese can be used.
Instructions
- Caramelize the Onions: Heat a large Dutch oven or a large cast-iron skillet over medium heat. These heavy-bottomed pots are ideal for even heat distribution, which is crucial for caramelizing onions without burning. Add 2 tablespoons of butter and 2 tablespoons of olive oil to the pot. Once the butter is melted and shimmering, add the thinly sliced onions and season them with ¼ teaspoon of salt. Salt helps to draw out moisture from the onions, initiating the caramelization process.
- Slowly Cook the Onions: Cook the onions, stirring often, for 45-50 minutes, or until they start to caramelize and develop a deep golden-brown color. Patience is key here. In the initial stages, you won’t need to stir as frequently, but as the onions cook down and start to brown, increase your stirring frequency. This prevents sticking and burning and ensures even caramelization.
- Manage the Heat: Keep a close eye on the onions. If they start to burn at any point, don’t panic. Simply add a splash of water to the pot. The water will deglaze the pan, lowering the temperature and releasing any flavorful browned bits stuck to the bottom. As the onions start to develop color, usually after about 30 minutes, turn the heat up to medium-high (or even high if needed, depending on your stovetop) and begin stirring every 30 seconds to 1 minute. This increased stirring and slightly higher heat will accelerate the caramelization and deepen the color and flavor.
- Add Garlic and Thyme: Once the onions have achieved a rich, deep golden-brown caramelized state, add the minced garlic and chopped fresh thyme to the pot. Cook for 1 minute, stirring constantly, until the garlic becomes fragrant. Be careful not to burn the garlic, as it can turn bitter quickly. The thyme will release its aromatic oils, infusing the caramelized onions with its herbaceous notes.
- Bloom the Flour: Sprinkle 2 tablespoons of all-purpose flour over the caramelized onions, garlic, and thyme mixture. Stir well to ensure the flour is evenly distributed and coats everything. Toast the flour for about 30 seconds, stirring constantly. This step, known as “blooming” the flour, cooks out the raw flour taste and enhances its thickening power.
- Deglaze with Wine and Soy Sauce: Pour in ½ cup of dry white wine and 2 teaspoons of low-sodium soy sauce. Stir well, scraping the bottom of the pot to deglaze and lift up any browned bits that have accumulated during the caramelization process. These browned bits, called “fond,” are packed with flavor and will enrich the sauce. Cook for 1-2 minutes, or until the alcohol in the wine evaporates slightly. You’ll notice the aroma of the wine become less sharp as the alcohol cooks off.
- Add Broth and Pasta: Pour in 2 cups of the hot vegetable broth, followed by the uncooked pasta. Season with ¼ teaspoon of salt and ¼ teaspoon of freshly cracked black pepper. Stir everything together to ensure the pasta is submerged in the liquid.
- Cook the Pasta in Broth: Bring the mixture to a simmer over medium-low heat. Cook the pasta, stirring frequently, until it absorbs most of the liquid. This will take some time, as the pasta needs to cook and absorb the broth while releasing its starch, contributing to the sauce’s creaminess.
- Continue Adding Broth in Stages: When the pasta has absorbed most of the initial 2 cups of broth, add another 2 cups of hot vegetable broth. Continue cooking, stirring frequently, until this second addition of broth is also mostly absorbed. Repeat this process one more time with the final 2 cups of vegetable broth. Cooking the pasta in stages like this allows for maximum starch release and creates a beautifully luscious and creamy sauce without needing to add cream or milk.
- Check for Doneness: Continue cooking until you have a rich, luscious sauce and the pasta is cooked through. This entire process of adding broth in stages and cooking the pasta will likely take around 25 minutes, but it can vary depending on your stovetop and the type of pasta used. The best way to determine if the pasta is ready is to taste it. It should be al dente – meaning it should have a slight bite to it, be chewy, but still soft and cooked through.
- Stir in the Cheese: Once the pasta is cooked to your liking and the sauce has reached a creamy consistency, turn off the heat. Add the shredded Gruyère cheese to the pot. Stir continuously until the cheese is completely melted and incorporated into the sauce, creating an even cheesier and more decadent texture.
- Season and Serve: Taste the French Onion Soup Pasta and adjust the seasoning if needed. You may want to add more salt or black pepper to taste, depending on your preferences and the saltiness of your broth and cheese. Serve immediately while it’s hot and cheesy.
Nutrition
- Serving Size: One Normal Portion
- Calories: 450-550 kcal
- Sugar: 8-12g
- Sodium: 600-800mg
- Fat: 20-25g
- Saturated Fat: 10-12g
- Unsaturated Fat: 8-13g
- Carbohydrates: 50-60g
- Fiber: 5-7g
- Protein: 18-22g