French Onion Pasta Prosciutto (Printable)

Caramelized onions, cheese sauce, silky pasta, and crisp prosciutto create a luxurious fusion main.

# Ingredient List:

→ Pasta

01 - 14 oz fettuccine or tagliatelle

→ Onions

02 - 3 large yellow onions, thinly sliced
03 - 2 tbsp unsalted butter
04 - 1 tbsp olive oil
05 - 1/2 tsp salt
06 - 1/4 tsp freshly ground black pepper
07 - 1/2 tsp sugar
08 - 2 cloves garlic, minced
09 - 1 tbsp fresh thyme leaves or 1 tsp dried thyme

→ Sauce

10 - 1/2 cup dry white wine
11 - 2 cups low-sodium beef or vegetable broth
12 - 1/2 cup heavy cream
13 - 1 cup grated Gruyère cheese
14 - 1/3 cup grated Parmesan cheese

→ Prosciutto

15 - 3.5 oz thinly sliced prosciutto

→ Garnish

16 - Fresh parsley, chopped
17 - Additional grated Parmesan (optional)

# How to Make:

01 - Heat unsalted butter and olive oil in a large skillet over medium-low heat. Add sliced yellow onions, salt, pepper, and sugar. Cook, stirring frequently, for 20 to 25 minutes until onions are deeply caramelized.
02 - Add minced garlic and thyme to the onions, stirring for 1 minute until fragrant.
03 - Pour in dry white wine and simmer for 2 to 3 minutes, allowing the liquid to reduce by half.
04 - Incorporate beef or vegetable broth. Bring to a gentle simmer and cook for 5 minutes so flavors meld.
05 - Boil fettuccine or tagliatelle in salted water according to package directions until al dente. Drain, reserving 1/2 cup of pasta water.
06 - Stir heavy cream into the onion mixture and simmer for 2 minutes. Reduce heat, add Gruyère and Parmesan cheeses, stirring constantly until fully melted and velvety.
07 - Add the cooked pasta to the creamy onion sauce, using reserved pasta water as needed for desired consistency. Toss gently so pasta is evenly coated.
08 - In a dry skillet over medium heat, cook prosciutto slices for 1 to 2 minutes per side until golden and crisp. Break into shards once cooled.
09 - Serve pasta in bowls, topped with crispy prosciutto shards, fresh chopped parsley, and extra Parmesan as desired.

# Expert Tips:

01 -
  • Uses simple ingredients that are easy to find in most stores
  • Feels special enough for a dinner party but is cozy for a weeknight
  • Layered flavors from caramelized onions and savory cheese
  • Every bite is creamy with crispy bits of prosciutto for contrast
02 -
  • High in protein thanks to cheese and prosciutto
  • Incredible leftovers that taste even better the next day
  • Pairs naturally with a green salad or crusty baguette
03 -
  • Always caramelize onions low and slow for true sweetness and depth.
  • Toasting cheese in the sauce step by step prevents clumping and makes a glossy finish.
  • Crisping prosciutto at the end keeps it from getting soggy.
  • If the sauce gets too thick, a splash of pasta water instantly brings everything back to life.

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