From memory, it was in Elle magazine; one of a sweeping collection of recipe cards, cut out along the dotted line, neatly organized, in a couple of bright orange bakelite boxes, color-coded and arranged by dish — starter, meat, dessert, etc. — most probably from the nineteen eighties. My mom’s.
This, at least, is how I remember it. Neither my mother nor my sister can recall where the recipe for this tarte — the clever combination of tomatoes with sharp mustard which mellows as it cooks — really comes from. In fact, it seems to be part of the French subconscious. As I was trying to corroborate the recipe’s origin I realized that according to the usual web search engines, in France ‘tarte à la tomate’ automatically defaults to ‘et à la moutarde.’
Regardless of whether it actually did once appear in Elle, there is no doubt that it is a French classic, and in my view firmly anchored in the 1980s. There are tomatoes, Emmental, mustard, a sprinkling of dried thyme at most. No fancy flours in the crust, no fresh herb flourishes.
I break these rules sometimes and add a few cut herbs, or substitute Comté for Emmental. But at heart the combination of tomatoes, mustard, and cheese remains. Its simplicity is testament to a recipe classic.
We make versions of it every summer, often on days when there isn’t a plan but always an enormous stash of tomatoes at different levels of tenderness that need rapid eating.
Tomato tarte with mustard
One uncooked savory pie pastry (see the basic recipe below or this unsweetened shortcrust)
Strong Dijon mustard
Hard cheese such as Emmental (or Comté), grated
Tomatoes, sliced
Sea salt and freshly ground black pepper
Dried or fresh thyme (also oregano, basil)
Preheat the oven to 400°F (200°C).
Roll out the pie crust and carefully transfer to a well-buttered pie dish. Poke the crust all over with a fork (so it won’t puff up as it bakes).
Spread a generous amount of mustard over the crust (like a shmear of cream cheese, the sharpness will mellow as it cooks). Sprinkle the grated cheese all over the crust. Arrange the tomato slices on top. Season with salt and pepper and thyme (or other herb).
Slide into the oven and bake for 20 to 30 minutes, or until the crust is golden, the tomatoes cooked, and the juices bubbling.
Serve immediately.
***
Quick savory pie pastry
100g cold butter
200g flour
A pinch of salt
A little ice-cold water
Cut the butter into 1/2 inch (1 cm) chunks.
Prepare the flour and salt in a large bowl. Mix in the butter with your fingertips, crumbling the butter and flour together until most of the butter chunks have become grains, but other larger bits remain. Add a little ice water, just enough to gather the crust into a smooth ball. (It’s important not to overhandle the dough, which will ensure that it remains flaky when cooked.)
Let the rest dough rest, covered, in the refrigerator, for at least one and up to 24 hours.
If the dough has been in the refrigerator for a few hours, allow a little time for it to soften before rolling it out.
Nettle and Quince 