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Creamy Caramelized Onion Pasta Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 40 reviews
  • Author: Emily
  • Prep Time: 20 minutes
  • Cook Time: 18 minutes
  • Total Time: 38 minutes
  • Yield: 2 servings
  • Category: Main Course
  • Method: Stovetop
  • Cuisine: Italian
  • Diet: Vegetarian

Description

Creamy Caramelized Onion Pasta is a rich and comforting dish featuring slowly caramelized onions blended into a luscious cashew cream sauce, tossed with perfectly cooked fettuccine pasta. This vegetarian recipe uses simple ingredients to create a deliciously satisfying meal ideal for a cozy dinner.


Ingredients

Scale

Caramelized Onions

  • 2 large onions
  • 1 tbsp oil
  • 1 tbsp butter
  • 1/4 tsp salt
  • 1 tsp sugar

Pasta

  • 4.5 ounces dry fettuccine pasta

Cashew Cream

  • 3/4 cup raw cashews soaked overnight
  • 1/2 cup water
  • 1 tsp white vinegar
  • 1/4 tsp salt
  • 1 tbsp nutritional yeast


Instructions

  1. Slice the onions: Peel the onions and slice them into 1/8-inch thick (3 mm) slices for even caramelization.
  2. Sauté: Heat oil and butter in a large skillet over medium heat. Add the sliced onions with a pinch of salt and sauté for 6 minutes, stirring regularly, until they begin to turn light golden brown.
  3. Season: Add 1/4 tsp salt and sugar, then continue to sauté for 30 minutes, stirring occasionally, until the onions are deeply caramelized and golden brown.
  4. Deglaze: Deglaze the skillet with 2 tablespoons of water to release any browned bits, then remove from heat and keep the onions in the skillet.
  5. Make the cashew cream: Drain soaked cashews and blend with water, white vinegar, salt, and nutritional yeast until smooth, blending for 20-30 seconds. Set aside.
  6. Cook the pasta: Bring a large pot of salted water to boil, cook pasta according to package instructions until al dente, then drain.
  7. Combine: Transfer the pasta to the skillet with caramelized onions, pour in the cashew cream, and toss with tongs or spatulas. Return skillet to medium heat and cook for 5 minutes, stirring frequently to coat pasta evenly. Add reserved pasta water if needed to thin the sauce.
  8. Serve: Taste and adjust salt if necessary. Garnish with chopped parsley or basil and a sprinkle of black pepper. Serve immediately.

Notes

  • Do not overcook the pasta; aim for al dente as it will cook further in the sauce.
  • Slice onions thinly (1/8 inch) for uniform caramelization; thicker slices take longer, thinner slices may burn.
  • Monitor onions closely while cooking; reduce heat if browning too fast. Stir every 3-5 minutes to allow caramelization.
  • Reserve about 1/3 cup pasta water to thin the sauce if it becomes too thick for better sauce adhesion.
  • Leftovers can be stored in the fridge for up to 2 days.

Nutrition

  • Serving Size: 1 serving
  • Calories: 450 kcal
  • Sugar: 8 g
  • Sodium: 400 mg
  • Fat: 18 g
  • Saturated Fat: 4 g
  • Unsaturated Fat: 12 g
  • Trans Fat: 0 g
  • Carbohydrates: 55 g
  • Fiber: 5 g
  • Protein: 12 g
  • Cholesterol: 10 mg