Pork with Squash and Apples

Name: Pork with Squash and Apples
Ingredients: 1 teaspoon freshly grated nutmeg; 1 1/2 teaspoons minced garlic (about 2 large cloves); 2 tablespoons chopped fresh sage; 2 1-pound pork tenderloins, trimmed; Kosher salt and freshly ground pepper; 1 small butternut squash, peeled and cut into 1-inch pieces; 2 cooking apples, peeled and cut into 1/2-inch pieces; 1 medium red onion, cut into 1/2-inch pieces; 1 tablespoon honey mustard; 1 sprig fresh rosemary; 5 tablespoons unsalted butter, cut into pieces