Pasta with caramelized onions, pecorino romano, and black pepper

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 INGREDIENTS

  • 1 pound Pasta
  • salt and coarsely ground pepper
  • 1 tablespoon Unsalted butter
  • 2 cups caramelized onions
  • 1 1/2 ounces Shredded Pecorino Romano cheese ; (3/4 cup), plus extra for serving
  • 1/4 cup chopped fresh parsley
  • 1 tablespoon White wine vinegar

INSTRUCTIONS

1) Bring 4 quarts water to boil in large pot. Add pasta and 1 tablespoon salt and cook. Reserve 1 1/2 cups cooking water.

2) While pasta cooks, melt butter in 1-inch skillet over medium heat. Add 1 tablespoon pepper and cook until fragrant, about 1 minute. Add onions and 1/2 teaspoon salt and cook, stirring occasionally until onions are warmed through, about 4 minutes

3) Add Pecorino, parsley, vinegar, onions and 1 cup (or more) reserved cooking water to pasta and stir to combine, Season with slat and pepper.