Mozzarella Stuffed Balsamic Portobello Mushrooms - Miz En Place

Ingredients

• ⅓ cup extra-virgin olive oil
• 2 tbsp balsamic vinegar (plus 1 teaspoon)
• 3 garlic cloves (minced, divided)
• 6 large portobello mushrooms, stemmed (stemmed)
• 1/3 cup panko ((Japanese breadcrumbs))
• 1 cup shredded mozzarella cheese ((about 5 ounces))
• ⅓ cup grated Parmesan cheese ((about 2 ounces))
• ¼ cup chopped green onions
• 1/2 tsp chopped fresh oregano
• 1/2 tsp chopped fresh thyme
• ¼ cup butter ((1/2 stick), melted)