Vegan Caramelized Onion Pasta

Vegan caramelized onion pasta topped with fresh herbs and served in a bowl

Vegan Caramelized Onion Pasta is one of those dishes that transcends a simple meal. Rich, savory caramelized onions combine beautifully with creamy vegan sauce, creating a comforting dish perfect for any occasion. Whether it’s a cozy weeknight dinner or an impressive dish for a gathering, this pasta recipe is a crowd-pleaser. Plus, it can be whipped up in just under 30 minutes. I can assure you, once you realize how easy it is to make this dish, it will quickly become a staple in your kitchen.

Why you’ll love this dish

Vegan Caramelized Onion Pasta isn’t just another plant-based recipe; it represents comfort and indulgence without the guilt. The sweet, caramelized onions paired with creamy plant-based milk create a luxurious sauce that clings perfectly to your choice of pasta. Not to mention, it’s quick to prepare, making it a fantastic option for busy weeknights or last-minute dinner guests. It’s budget-friendly as well, requiring just a handful of ingredients that you may already have in your pantry.

"This Vegan Caramelized Onion Pasta is an absolute game-changer! The flavors are incredible, and it’s so easy to make. My non-vegan friends loved it too!" — Sarah T.

Step-by-step overview

Let’s dive into how to bring this dish to life. First, you’ll cook your pasta of choice, typically spaghetti or fettuccine, until it’s al dente. While that’s happening, you’ll create a deliciously rich sauce featuring caramelized onions and garlic. Then, simply combine everything together, and you’re ready to dig in.

What you’ll need

Gather these ingredients to create your vegan masterpiece:

  • 12 oz (340g) pasta of your choice (spaghetti or fettuccine recommended)
  • 2 large yellow onions, thinly sliced
  • 3 tablespoons olive oil, divided
  • 3 cloves garlic, minced
  • 1 teaspoon sugar (optional, enhances caramelization)
  • 1/2 teaspoon salt (or to taste)
  • 1/4 teaspoon freshly ground black pepper
  • 1 teaspoon balsamic vinegar
  • 1 cup unsweetened plant-based milk (such as almond or soy milk)
  • 2 tablespoons nutritional yeast (adds cheesy flavor)
  • 1/2 teaspoon dried thyme
  • 1/4 teaspoon crushed red pepper flakes (optional, for heat)
  • Fresh parsley, chopped, for garnish
  • Vegan parmesan, for serving (optional)

Feel free to substitute based on availability—see the tips section for suggestions!

Directions to follow

  1. Cook the pasta: In a large pot of salted boiling water, cook the pasta according to package instructions until al dente. Reserve 1 cup of the pasta water before draining.

  2. Sauté the onions: While the pasta cooks, heat 2 tablespoons of olive oil in a large skillet over medium heat. Add the sliced onions and a pinch of salt. Stir occasionally, cooking for about 15-20 minutes until they start to brown. If using, sprinkle in the sugar to enhance caramelization.

  3. Add garlic: Once the onions are golden and caramelized, stir in the minced garlic, cooking for an additional 2 minutes until fragrant.

  4. Deglaze and create the sauce: Pour in the balsamic vinegar and let it cook for 1-2 minutes until it reduces slightly.

  5. Combine with plant-based milk: Lower the heat and add the unsweetened plant-based milk, stirring in nutritional yeast, dried thyme, black pepper, and optional red pepper flakes. Allow the sauce to simmer for 2-3 minutes to thicken. If the sauce is too thick, add the reserved pasta water one tablespoon at a time until you reach the desired consistency.

  6. Mix pasta and sauce: Add the drained pasta to the skillet, tossing well to coat each strand with the rich sauce. Remove from heat and drizzle in the remaining tablespoon of olive oil. Taste and adjust the seasoning, if necessary.

  7. Serve: Garnish with fresh parsley and sprinkle vegan parmesan over the top before serving.

Best ways to enjoy it

Vegan Caramelized Onion Pasta can be the star of a meal or a lovely side dish. Consider pairing it with a fresh side salad, some garlic bread, or roasted vegetables to enhance the experience. Pour yourself a glass of vegan-friendly wine or a refreshing sparkling water to elevate this delightful dish.

How to store

Leftover Vegan Caramelized Onion Pasta can easily be stored in an airtight container in the refrigerator for up to 3-4 days. To reheat, simply warm it on the stovetop, adding a splash of plant-based milk or reserved pasta water to help revitalize the sauce. Freezing is not recommended, as the texture of the sauce may change upon thawing.

Helpful cooking tips

  • Caramelization magic: Be patient while caramelizing the onions; the process is key to developing their sweet flavor. Avoid rushing the cooking time, as this can lead to burnt or unevenly cooked onions.
  • Explore flavors: Don’t be shy about adding herbs or spices you enjoy. Fresh basil or sage can also work wonderfully in this dish.
  • Keep it creamy: If you want an extra creamy sauce, adding a spoonful of cashew cream or even more nutritional yeast will elevate the richness further.

Creative twists

Feel free to get creative with your Vegan Caramelized Onion Pasta! You can try switching out the nutritional yeast for vegan cheese, or even add in sautéed mushrooms or spinach for additional flavor and nutrients.

Your questions answered

Q: What type of pasta works best?
A: Spaghetti or fettuccine are recommended, but you can use any pasta you like, including gluten-free options.

Q: Can I make this dish ahead of time?
A: Yes! You can prepare the sauce and cook the pasta ahead of time and then combine them when you’re ready to serve.

Q: Is this dish kid-friendly?
A: Absolutely! The sweet flavor from the caramelized onions is typically a hit with kids, and it’s a great way to sneak in some vegetables.

Vegan Caramelized Onion Pasta is not only a culinary delight but also a testament to the beauty of plant-based cooking. With its blend of rich flavors and textures, this dish will undoubtedly earn a special place on your dinner table. Enjoy!

Vegan Caramelized Onion Pasta

Vegan Caramelized Onion Pasta

Please rate us
A comforting and indulgent dish featuring rich, savory caramelized onions and creamy vegan sauce, perfect for any occasion.
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings: 4 servings
Course: Dinner, Main Course
Cuisine: Italian, Vegan
Calories: 350

Ingredients
  

Pasta and Main Ingredients
  • 12 oz 12 oz (340g) pasta of your choice (spaghetti or fettuccine recommended)
  • 2 large 2 large yellow onions, thinly sliced
  • 3 tbsp 3 tablespoons olive oil, divided
  • 3 cloves 3 cloves garlic, minced
  • 1 tsp 1 teaspoon sugar (optional, enhances caramelization)
  • 1/2 tsp 1/2 teaspoon salt (or to taste)
  • 1/4 tsp 1/4 teaspoon freshly ground black pepper
  • 1 tsp 1 teaspoon balsamic vinegar
  • 1 cup 1 cup unsweetened plant-based milk (such as almond or soy milk)
  • 2 tbsp 2 tablespoons nutritional yeast (adds cheesy flavor)
  • 1/2 tsp 1/2 teaspoon dried thyme
  • 1/4 tsp 1/4 teaspoon crushed red pepper flakes (optional, for heat)
  • to taste Fresh parsley, chopped, for garnish
  • to taste Vegan parmesan, for serving (optional)

Method
 

Cooking the Pasta
  1. In a large pot of salted boiling water, cook the pasta according to package instructions until al dente. Reserve 1 cup of the pasta water before draining.
Sautéing the Onions
  1. While the pasta cooks, heat 2 tablespoons of olive oil in a large skillet over medium heat. Add the sliced onions and a pinch of salt. Stir occasionally, cooking for about 15-20 minutes until they start to brown. If using, sprinkle in the sugar to enhance caramelization.
Adding Garlic
  1. Once the onions are golden and caramelized, stir in the minced garlic, cooking for an additional 2 minutes until fragrant.
Creating the Sauce
  1. Pour in the balsamic vinegar and let it cook for 1-2 minutes until it reduces slightly.
  2. Lower the heat and add the unsweetened plant-based milk, stirring in nutritional yeast, dried thyme, black pepper, and optional red pepper flakes. Allow the sauce to simmer for 2-3 minutes to thicken. If the sauce is too thick, add the reserved pasta water one tablespoon at a time until you reach the desired consistency.
Mixing Pasta and Sauce
  1. Add the drained pasta to the skillet, tossing well to coat each strand with the rich sauce. Remove from heat and drizzle in the remaining tablespoon of olive oil. Taste and adjust the seasoning, if necessary.
Serving
  1. Garnish with fresh parsley and sprinkle vegan parmesan over the top before serving.

Nutrition

Serving: 1gCalories: 350kcalCarbohydrates: 52gProtein: 10gFat: 12gSaturated Fat: 2gSodium: 600mgFiber: 4gSugar: 5g

Notes

Leftover Vegan Caramelized Onion Pasta can be stored in an airtight container in the refrigerator for up to 3-4 days. To reheat, simply warm it on the stovetop, adding a splash of plant-based milk or reserved pasta water.
Tried this recipe?Let us know how it was!

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