Grilled Heirloom Tomato Flatbread

Ingredients

• 2 large rectangular or oval flatbreads
• 3 medium-sized heirloom tomatoes, thinly sliced
• 1 1/2 tablespoons olive oil
• 1/2 teaspoon salt
• 1/2 teaspoon cracked black pepper
• 12-ounces fresh mozzarella cheese, thinly sliced
• 3-ounces baby arugula
• 3-4 slices prosciutto, torn
• 1 tablespoon flaked Parmesan cheese
• Cracked black pepper, for garnish
• 2 teaspoons golden balsamic vinegar
• 2 teaspoons lemon juice
• 1/4 teaspoon salt
• 1/4 teaspoon black pepper
• Pinch of crushed red pepper flakes
• Juice from the tomatoes