Roasted Lion's Mane Mushrooms with Sherried Shallots

Heat a medium saucepan over medium-high heat. Add 1 tablespoon oil to pan; swirl to coat. Add shallots, thyme, and 1/4 teaspoon salt; sauté 4 minutes, stirring frequently. Add sherry; cover, reduce heat, and simmer 10 minutes or until very tender. Stir in vinegar and black pepper. Remove from heat;