Mom's Best Recipes
Recipe

Tomato Tart With Puff Pastry

Flaky puff pastry, a tangy Dijon-herb layer, melty cheese, and juicy tomatoes roasted into crisp-edged perfection.

Author By Matt Campbell
4.8
A rectangular puff pastry tomato tart topped with overlapping heirloom tomato slices, melted cheese, and fresh basil on a parchment-lined baking sheet on a bright kitchen counter
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If you have tomatoes that smell like actual tomatoes, this tart is the move. It is flaky and golden at the edges, a little creamy in the middle, and bright in that “wait, I need another bite” way. Think: pizza vibes, but lighter, prettier, and way less commitment.

The secret is a quick Dijon and herb layer plus a little cheese strategy that keeps the puff pastry crisp instead of sad and soggy. This is the kind of recipe that looks like you planned ahead, even if you did not. My favorite kind.

A tidy kitchen counter with puff pastry, ripe tomatoes, Dijon mustard, fresh basil, garlic, olive oil, and small bowls of shredded cheese and herbs ready for a tomato tart

Why It Works

  • Crisp, flaky crust: Puff pastry does the heavy lifting, and a hot oven finishes the job.
  • Not watery: Salting and blotting the tomatoes plus a thin mustard layer helps keep everything structured.
  • Big flavor with pantry stuff: Dijon, garlic, herbs, and Parmesan give you that “restaurant bite” without hunting down weird ingredients.
  • Flexible: Make it as a light dinner with a salad or slice it smaller for a party snack.

Pairs Well With

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Storage Tips

Fridge: Let the tart cool completely, then store leftovers in an airtight container for up to 3 days. If possible, place a paper towel under the slices to catch moisture.

Reheat (best method): Warm on a sheet pan in a 375°F oven for 8 to 12 minutes until the bottom crisps back up. A toaster oven works great.

Avoid: The microwave will reheat it, sure, but it will also soften the pastry. If you do microwave, finish in a hot skillet for 1 to 2 minutes to revive the bottom.

Freezing: You can freeze baked slices for up to 1 month, but the tomatoes can get a little softer after thawing. Reheat from frozen at 375°F for 15 to 20 minutes.

Common Questions

How do I keep a tomato tart from getting soggy?

Salt the tomato slices for 10 to 20 minutes, then blot well. Also bake hot (425°F) and use a thin barrier layer, like Dijon plus a sprinkle of Parmesan, before the juicy stuff goes on.

Can I use pie crust instead of puff pastry?

Yes. You will get more of a classic savory tart vibe and less shattery flake. Par-bake the crust for about 10 minutes at 400°F before adding toppings, then finish baking until the tomatoes look roasted.

What tomatoes are best?

Roma or plum tomatoes are easiest because they are less watery. Heirlooms are gorgeous, just blot them well and keep the slices a little thicker so they do not collapse into a puddle. If your tomatoes are extremely juicy, you can also gently scoop out some seeds and gel before slicing.

Can I make this ahead?

You can prep components ahead: slice and salt tomatoes, mix the herb layer, shred cheese. For best texture, bake right before serving. If you must bake ahead, re-crisp in the oven right before eating.

Is this served hot or room temp?

Both. Hot is flakier and melty. Room temp is more picnic-friendly and still very good. If you are serving guests, a 15-minute rest after baking hits the sweet spot.

I started making versions of this tart when I realized two things: I love “tart dinner,” and I do not love washing a mountain of dishes on a Tuesday. Puff pastry is my little cheat code here. It bakes up like you planned your life, even if you were kind of just standing in the kitchen thinking, “I wonder if this will work.”

The first time I made it, I overloaded the tomatoes because confidence is a liar, and it went a bit soft in the middle. Now I salt and blot like I mean it, keep the layer thin, and let the edges get aggressively golden. The result is crisp, cozy, and bright, with just enough chaos to feel fun.