Lori's Caramelized Onion Spaghetti

Indulge in the rich, savory goodness of *Lori's Caramelized Onion Spaghetti*, a simple yet flavor-packed pasta dish that's perfect for weeknight dinners or elegant entertaining. This recipe combines tender strands of al dente spaghetti with deeply caramelized onions, a touch of balsamic vinegar, and a hint of garlic for a harmonious balance of sweet and savory flavors. A sprinkle of red pepper flakes adds optional heat, while fresh parsley and grated Parmesan cheese provide the perfect finishing touch. Ready in under an hour, this dish features pantry staples like olive oil, butter, and sugar, making it both budget-friendly and irresistibly gourmet. Comforting, versatile, and easy to prepare, this caramelized onion spaghetti will quickly become a household favorite!

Nutriscore Rating: 66/100

Prep Time:10 mins

Cook Time:40 mins

Total Time:50 mins

Servings: 4

Ingredients

• 12 oz spaghetti
• 3 tbsp olive oil
• 2 tbsp unsalted butter
• 3 large yellow onions (thinly sliced)
• 4 cloves garlic (minced)
• 2 tsp balsamic vinegar
• 1 tsp granulated sugar
• 1 tsp salt
• 0.5 tsp black pepper (freshly ground)
• 0.25 tsp red pepper flakes (optional)
• 2 tbsp fresh parsley (chopped, for garnish)
• 0.5 cup Parmesan cheese (grated, for topping)

Directions

Step 1

Fill a large pot with water, add a generous pinch of salt, and bring it to a boil. Cook the spaghetti according to package instructions until al dente. Reserve 1 cup of pasta water before draining, then set aside.

Step 2

Heat the olive oil and butter in a large skillet over medium heat. Once melted and shimmering, add the thinly sliced onions and a pinch of salt.

Step 3

Cook the onions, stirring occasionally, for about 25-30 minutes or until they are golden brown and caramelized. If the onions start to stick, add a tablespoon of water to deglaze the pan.

Step 4

Stir in the minced garlic, balsamic vinegar, and sugar, and cook for an additional 2-3 minutes until the garlic is fragrant and everything is well combined.

Step 5

Season the mixture with black pepper and red pepper flakes (if using). Taste and adjust seasoning as needed.

Step 6

Add the cooked spaghetti to the skillet with the caramelized onion mixture. Toss to combine, adding reserved pasta water a little at a time to loosen the sauce and coat the spaghetti evenly.

Step 7

Divide the spaghetti among serving plates. Garnish with freshly chopped parsley and grated Parmesan cheese.

Step 8

Serve immediately and enjoy!

Nutrition Facts

Serving size	(1166.4g)

Amount per serving	% Daily Value*
Calories	1906.4

Total Fat 103.3g	0%
Saturated Fat 42.8g	0%
Polyunsaturated Fat 4.0g
Cholesterol 133.4mg	0%
Sodium 4206.9mg	0%
Total Carbohydrate 176.4g	0%
Dietary Fiber 17.0g	0%
Total Sugars 34.7g
Protein 72.7g	0%

Vitamin D 47.6IU	0%
Calcium 1517.1mg	0%
Iron 7.9mg	0%
Potassium 1199.7mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 48.3%

Protein: 15.1%

Carbs: 36.6%