Caramelized Onion, Apple, and Sausage Pasta

Name: Caramelized Onion, Apple, and Sausage Pasta
Prep time: 30 min
Cook time: 1 h
Total time: 1 h 30 min
Cuisine: European, Italian, Mediterranean
Ingredients: 4 medium yellow onions (about 1 3/4 pounds total); 2 medium Granny Smith or Honeycrisp apples (about 1 pound total); 4 cloves garlic; 1 bunch fresh parsley; 4 ounces Parmesan cheese, finely grated (about 1 cup); 2 tablespoons olive oil; 12 ounces uncooked sweet or spicy Italian bulk sausage; 4 tablespoons (1/2 stick) unsalted butter; 1 teaspoon dried thyme; 1/4 teaspoon red pepper flakes; 1 teaspoon kosher salt, plus more for the pasta water; 1 teaspoon freshly ground black pepper; 1 pound dried orecchiette pasta; 1 cup dry white wine