Grilled and Stuffed Portobello Mushrooms with Gorgonzola

Name: Grilled and Stuffed Portobello Mushrooms with Gorgonzola
Ingredients: 2 tablespoons olive oil, plus 1/4 cup; 12 ounces turkey sausage, casings removed; 2 cloves garlic, minced; 1/2 cup mascarpone cheese, at room temperature; 2 tablespoons fresh thyme; 2 tablespoons fresh oregano; 3/4 cup plain breadcrumbs; 1 cup (4 ounces) Gorgonzola, crumbled; 1/2 teaspoon kosher salt, plus extra for seasoning; 1/2 teaspoon freshly ground black pepper, plus extra for seasoning; 6 large portobello mushrooms, stems removed