½cupgrated Gruyère cheese or a mix of Gruyère and Parmesan
2tablespoonsolive oil
1teaspoonfresh thyme leaves or ½ teaspoon dried thyme
Salt and freshly ground black pepper to taste
Fresh basil leaves for garnish
Instructions
Preheat your oven to 400°F (200°C).
Lightly grease a round tart baking pan (approximately 9–10 inches in diameter).
Lightly flour the top and bottom pastry dough. Roll out the puff pastry in between two sheets of parchment paper to fit your round tart pan.
Gently press the pastry into the tart pan, trimming any excess around the edges. Ensure the pastry fits snugly against the sides of the pan.
Prick the bottom of the pastry all over with a fork to prevent it from puffing too much during baking.
Spread the Dijon mustard evenly over the base of the pastry.
Arrange the tomato slices in an overlapping circular pattern over the cheese layer, starting from the outer edge and working toward the center for a decorative look.
Sprinkle the grated Gruyère cheese evenly over the tomatoes.
Drizzle with olive oil and sprinkle with thyme, salt, and freshly ground black pepper.
Place the tart in the preheated oven and bake for 25–30 minutes, or until the pastry is golden brown and crisp, and the tomatoes are slightly caramelized.
Let the tart cool slightly before garnishing with fresh basil leaves.
Slice into wedges and serve warm or at room temperature. It’s perfect as an appetizer, side dish, or light lunch.