Butternut Squash and Sausage Salad

Deselect All

5 tablespoons extra-virgin olive oil

1 1/4 pounds sweet Italian sausage (about 6 links)

3 cups 1/2-inch cubes butternut squash (about 1/2 medium squash)

1 red onion, sliced into thick rings

Kosher salt and freshly ground pepper

2 tablespoons apple cider vinegar

1 teaspoon honey mustard

1 small clove garlic, finely grated

1 5-ounce package baby arugula (about 8 cups)

4 cups torn frisee

1/2 cup grated ricotta salata cheese, plus more for topping