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Caramelized Onion Pasta

Ingredients
2 Tbsp.
extra-virgin olive oil
2 Tbsp.
unsalted butter
2 lb.
onions (about 3 large), thinly sliced
2 cloves
garlic, thinly sliced
1/4 tsp.
crushed red pepper flakes (optional)
1 1/2 tsp.
kosher salt, plus more
12 oz.
linguine or other long pasta
4 oz.
Parmesan, finely grated (about 1 cup), divided, plus more for serving
1/2 cup
parsley, finely chopped (optional), plus more for serving
to taste
Freshly ground black pepper
Instructions
1
Meanwhile, cook pasta in a large pot of boiling salted water, stirring occasionally, until al dente. Reserve 1 1/2 cups pasta cooking liquid.
2
Add pasta and 1 cup pasta cooking liquid to onion mixture; 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).
3
Divide pasta among bowls. Top with more Parmesan, parsley, and fresh black pepper.
Notes
Nutrition Facts
(per serving)
Calories:
450 calories (per serving)
Servings:
4 servings
Carbohydrates:
47 g
Fat:
24 g
Fiber:
2 g
Protein:
16 g
Sugar:
3 g
Meal Effort
Preparation:
10 minutes
Cook:
35 minutes
Total:
45 minutes