Caramelized Onion Pasta

Ingredients for Caramelized Onion Pasta

• 2 tablespoons extra-virgin olive oil

• 2 tablespoons unsalted butter

• 900g onions (about 3 large), thinly sliced

• 2 garlic cloves, thinly sliced

• 1/4 teaspoons crushed red pepper flakes (optional)

• 1 1/2 teaspoons kosher salt, plus more

• 350g linguine or other long pasta

• 110g Parmesan, finely grated (about 1 cup), divided, plus more for serving

• 1/2 cup parsley, finely chopped (optional), plus more for serving

• Freshly ground black pepper

Heat oil and butter in a large heavy pot or Dutch oven over medium until butter is melted. Add onions and garlic and cook, stirring occasionally, until very tender and deeply golden brown, about 30 minutes. (Stop before the onions become dry and shriveled.) Add red pepper flakes (if using) and 1 1/2 teaspoons salt. Remove pot from heat.

Meanwhile, cook pasta in a large pot of boiling salted water, stirring occasionally, until al dente. Reserve 350ml pasta cooking liquid.

Add pasta and 240ml pasta cooking liquid to onion mixture and stir to combine. Add a small handful of cheese and stir until melted. Repeat with remaining cheese, adding more pasta cooking liquid as needed to create a glossy sauce that coats the pasta. Stir in parsley (if using).

Divide pasta among bowls. Top with Parmesan, parsley, and a few cranks of pepper.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.