Pasta With Bacon and Caramelized Cauliflower

Name: Pasta With Bacon and Caramelized Cauliflower
Ingredients: 6 ounces thick-cut bacon (about 5 slices), chopped; 1 tablespoon olive oil; 4 cups cauliflower florets (13 oz.), cut into small pieces; .50 teaspoon kosher salt, plus more for water; 1 tablespoon finely chopped garlic (from 3 cloves); 12 ounces casarecce or penne pasta; 2 tablespoons (¼ stick) cold unsalted butter; 2 ounces pecorino Romano cheese, grated (about ½ cup), divided; 6 tablespoons finely chopped fresh flat-leaf parsley, divided