Golden Cauliflower Gratin with Prosciutto and Cherry Tomatoes

Ingredients

• 1 tablespoon olive oil
• 1/2 teaspoon freshly ground black pepper
• 1/4 cup fresh parsley, finely chopped
• 2 cups cherry tomatoes
• 2 cloves garlic, minced
• 1 large head cauliflower, cut into florets
• 1 teaspoon salt
• 1/4 teaspoon freshly grated nutmeg
• 1 cup heavy cream
• 1 1/2 cups grated Parmigiano-Reggiano cheese
• 1/2 cup unsalted butter
• 4 ounces prosciutto, thinly sliced