Caramelized Onion and Garlic Spaghetti – Easy Vegetarian Pasta Recipe
Caramelized onion and garlic spaghetti made with slow-cooked onions, fragrant garlic, and olive oil for a cozy vegetarian pasta everyone loves.
- Prep Time: 10 minutes
- Cook Time: 40 minutes
- Total Time: 50 minutes
- Yield: 4
- Category: Comfort Food • Main Course • Weeknight Dinner
- Method: cooking
- Cuisine: Italian-Inspired • Mediterranean • Fusion
Ingredients
Caramelized onion and garlic spaghetti made with slow-cooked onions, fragrant garlic, and olive oil for a cozy vegetarian pasta everyone loves.
Instructions
Caramelize the Onions
Heat olive oil in a large skillet over low heat. Add sliced onions and cook slowly for 30–40 minutes, stirring occasionally, until soft, golden, and jammy.
Add Garlic
Stir in minced garlic and cook for 1–2 minutes, just until fragrant and lightly golden.
Cook the Pasta
Bring a large pot of salted water to a boil. Cook spaghetti until al dente. Reserve ½ cup pasta water, then drain.
Combine & Sauce
Add drained pasta to the skillet with the onions and garlic. Pour in reserved pasta water and toss gently until a silky sauce forms.
Finish & Serve
Season with salt, pepper, and chili flakes if using. Garnish with Parmesan and fresh parsley. Serve warm.
Notes
Cook onions low and slow—this is key to their sweetness and depth.
Pasta water is essential for emulsifying the sauce—don’t skip it.
Add spinach or kale at the end for extra freshness.
Use nutritional yeast instead of Parmesan for a vegan version.
Doubling the onions makes this dish even more luxurious.
