Ingredients

• vegetable oil cooking spray
• 4 thin slices prosciutto
• 3 tablespoons olive oil
• 1 small onion, finely chopped
• 3 cloves garlic, minced
• 5 cups (5 ounces) baby spinach
• 1/4 teaspoon ground nutmeg
• 3/4 cup heavy cream
• 2/3 cup grated pecorino romano
• 1 tablespoon kosher salt, plus extra for seasoning
• freshly ground black pepper
• 1 tablespoon fresh lemon juice
• 4 eggs, at room temperature
• 2 beefsteak tomatoes, trimmed and cut into 1-inch thick slices