6 to 8smoked Gruyère cheese slices Regular Gruyère or Swiss cheese will work
6medium ripe tomatoessliced ¼-inch thick
Kosher salt and freshly cracked black pepper
1tablespoonfresh thyme
fresh basil leavesto taste, for garnish
Instructions
Preheat the Oven and Prepare a Baking Sheet
Preheat the oven to 400 degrees F. Lightly grease a baking sheet or line with parchment paper; set aside.
Salt the Tomatoes
Slice the tomatoes into ¼-inch thick slices. Lay on a paper towel and sprinkle with salt. Flip and salt the other side. Allow the tomatoes to sit for 10 minutes. After 10 minutes, blot the tomatoes with a papertowel.
Prepare the Puff Pastry
Unfold the pastry sheet and roll it out with a rolling pin until it is long enough to fit into the baking sheet. Place the pastry sheet onto a baking sheet, pressing and reshaping to fit the pan as close to size as possible.
Using a knife score a line about 1-inch from the edge around the perimeter. Poke the dough with a fork inside the scored lines. Spread the mustard onto the pastry within 1 inch of the edge. Then top with cheese slices trying to cover the area inside the border the best you can.
Layer The Puff Pastry and Ingredients
Lay the tomato slices over, mustard covered pastry, overlapping, as needed. Season with salt and pepper, to taste and sprinkle with thyme leaves.
Bake
Bake in the preheated oven, for 20 to 25 minutes, or until the pastry is crisped and slightly browned on the edges.
Cool, Slice and Enjoy!
Allow the tart to cool slightly for about 5 minutes. Cut the tart into 8 squares and garnish with fresh basil leaves. Can be served hot, warm or at room temperature.
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