Servings: 0
Preheat your oven to 425°F and line a baking sheet with parchment paper.
Lightly roll out puff pastry on the parchment and transfer it to the baking sheet.
Score a 1-inch border around the edges and prick the center with a fork.
Spread Dijon mustard on the center, sprinkle grated Gruyère cheese evenly, and layer tomato slices on top.
Season with salt, pepper, thyme, Herbes de Provence, and drizzle with olive oil.
Bake for 30 minutes until the edges are golden brown. Serve warm.
Calories: 347kcal | Carbohydrates: 22g | Protein: 11g | Fat: 26g | Saturated Fat: 8g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 133g | Trans Fat: 1g | Cholesterol: 24mg | Sodium: 667mg | Potassium: 219mg | Fiber: 2g | Sugar: 2g | Vitamin A: 810IU | Vitamin C: 11mg | Calcium: 257mg | Iron: 2mg