Easy Portabello Parmesan

Bahan-bahan (4 porsi)

• 4 large portobello mushroom caps, gills and stems removed
• 2 tablespoons olive oil
• fine sea salt and freshly-ground black pepper
• 1/2 cup marinara sauce
• 1/2 cup grated Parmesan cheese
• 1/2 cup low-moisture shredded mozzarella cheese
• 3 to 4 tablespoons finely chopped fresh basil leaves
• 1 tablespoon butter or olive oil
• 2 large cloves garlic, pressed or minced
• 1/2 cup Panko breadcrumbs
• 1/2 teaspoon each: fine sea salt and freshly-ground black pepper