Gluten-Free Portobello Pizza

Ingredients (8)

• + cooking spray add to pantry
• + 4 large portobello mushroom cups, gills removed add to pantry
• + 3 tablespoons extra-virgin olive oil add to pantry
• + 1 pinch salt and ground black pepper to taste add to pantry
• ✓ 1 pinch salt and ground black pepper to taste
• + 2 cups sliced fresh mozzarella cheese, divided add to pantry
• + ½ cup sliced cherry tomatoes add to pantry
• ✓ ½ cup chopped fresh basil