Tomato Tart With Mustard Créme Fraîche


This gorgeous tart is deceptively simple. Just roll the puff pastry, spread with mustard-spiked crème fraiche, and shingle sliced tomatoes overtop. Then, bake the pastry until it’s golden brown, that’s the key to a flaky (not soggy) crust. Looking for a fun project? You can create a rainbow ombre effect that’s perfect for Instagram. Start with a red tomato at the top, then segue into a yellow tomato, and finish with a green one on the bottom. If you can’t find crème fraiche, sour cream works equally well.

Tomato Tart With Mustard Crème Fraîche
Photo: Jennifer Causey
Hands On Time:
10 mins
Total Time:
50 mins


  • All-purpose flour, for work surface

  • 1 8-oz. sheet all-butter puff pastry, thawed according to package directions

  • ¼ cup sour cream or crème fraîche

  • 1 tablespoon grainy mustard

  • 2 teaspoons chopped fresh thyme, plus leaves for serving

  • ¾ teaspoon kosher salt, divided

  • Freshly ground black pepper

  • ¼ pound heirloom or beefsteak tomatoes, thinly sliced

  • Flaky salt, for serving


  1. Preheat oven to 425°F. On a floured piece of parchment, roll puff pastry into a 10-by-12-inch rectangle; prick all over with a fork. Transfer parchment and pastry to a baking sheet.

  2. Whisk sour cream, mustard, chopped thyme, ¼ teaspoon salt, and several grinds of pepper in a small bowl. Spread sour cream mixture evenly over pastry, leaving a ½-inch border. Top with tomatoes, overlapping slightly, and season with remaining ½ teaspoon salt and several grinds of pepper.

  3. Bake until pastry is golden brown (peek underneath to check the bottom) and tomatoes look dry, 30 to 35 minutes. Let cool slightly before cutting into squares. Serve topped with thyme leaves and flaky salt.

Nutrition Facts (per serving)

245 Calories
16g Fat
21g Carbs
4g Protein
Nutrition Facts
Calories 245
% Daily Value *
Total Fat 16g 21%
Saturated Fat 5g 23%
Cholesterol 5mg 2%
Sodium 358mg 16%
Total Carbohydrate 21g 8%
Total Sugars 3g
Protein 4g

*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

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