French Onion Tart Recipe | MasalaHerb.com (2024)

Published: · Modified: by Helene Dsouza

French Onion Tart Recipe | MasalaHerb.com (1)Helene Dsouza

Rustic budget-friendly french onion tart. This is a family dinner meal.

Total Time: 1 hour hour 20 minutes minutes

Prep Time: 20 minutes minutes

Cook Time: 1 hour hour

8 slices

4.4 from 7 votes

RECIPE

French Onion Tart Recipe | MasalaHerb.com (2)

This is a french family onion tart recipe. It's from northern France, the historical Picardi region.

You can prepare this savory tart within minutes or choose to make it from scratch.

French Onion Tart Recipe | MasalaHerb.com (3)

French Onion Tart Recipe | MasalaHerb.com (4)

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Jump to:
  • 📕 What is an onion tart?
  • 🔪 How to make it?
  • 🥣 Serving ideas
  • 🍱 Storing
  • 💭 FAQs
  • 👁️ More Recipes from the region
  • 📖 Recipe
  • 💬 Comments

📕 What is an onion tart?

An onion tart is a savory open pie-like pastry with an onion custard filling.

It's a traditional main course dish, served for lunch or dinner, in Northern France.

My mother's family (and this recipe) is from the Cathedral City Beauvais in Picardi; however, different variations may exist in Alsace, Lorraine, Normandi, and even Ils-de-France (Paris area).

🔪 How to make it?

Making this dish is rather easy if you have the pastry ready.

You can use a short crust pastry, a puff pastry or even a filo pastry (if that is what you have at home). Traditionaly a simple unsweetened puff pastry is used.

Here is roughly the procedure laid out so that you can decide if you want to make this today.

For more details see recipe at the bottom of the post with the quantity of the ingredients.

Step 1

Peel and slice onions.

Combine the custard filling ingredients.

French Onion Tart Recipe | MasalaHerb.com (5)

Step 2

Place rolled out pastry dough into a tart pan and cut off excess edges.

Make small holes with a fork into the pastry bottom and bake the pastry first alone (called blind baking).

Saute sliced onions in a pan until soft. Keep to cool for 5 minutes

French Onion Tart Recipe | MasalaHerb.com (6)

Step 3

Spread cooked onions in the semi baked tart crust.

Pour savory custard filling over the onion.

Bake onion tart until cooked through and serve hot.

French Onion Tart Recipe | MasalaHerb.com (7)

🥣 Serving ideas

We usually prepare our onion tart for lunch or dinner and serve it with a simple green salad and a vinaigrette.

You can serve it with any other lighter salad or a clear soup.

The tart is great with a wine such as a white wine or a rose.

A Riesling or Chardonnay tastes great with this onion tart.

🍱 Storing

Keep baked leftovers in your fridge and warm it up in the oven. You can keep it in the fridge for up to 2-3 days.

You can also freeze your tart. To do that, simply prepare the complete tart as per instructions but don't bake it at the end.

Just place the tart into your freezer and wait for it to get stone hard. Take out from the tart pan, wrap into foil and keep in the freezer.

Take out your frozen onion tart whenever you want to bake it and place it back into the same tart shape.

Don't thaw, just place it frozen into the oven but add extra baking time to the cooking process. About 15 minutes more.

You can keep a frozen tart for about 2-3 months in the freezer.

French Onion Tart Recipe | MasalaHerb.com (8)

💭 FAQs

Can I prepare the pastry without blind baking it?

Yes, you can. But add the baking time to your total time. That said it's better to partially bake the crust in the oven all alone (blind baking) so that the crust is properly baked through and not soft. But when I'm lazy or out of time (because I don't mind a softer crust), I just bake it all in one go without blind baking. #confession The choice is up to you!

Quich VS Savory Tart

A quiche is just a savory custard tart. Tarts can be sweet or savory but a quiche is always savory and always with a custard base. So, actually this onion tart could be called a quiche too.

👁️ More Recipes from the region

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French Onion Tart Recipe | MasalaHerb.com (10)

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📖 Recipe

French Onion Tart Recipe | MasalaHerb.com (11)

French Onion Tart Recipe

Rustic budget-friendly french onion tart. This is a family dinner meal.

4.43 from 7 votes

Print Pin Rate

Course: Main Course

Cuisine: French

Prep Time: 20 minutes minutes

Cook Time: 1 hour hour

Total Time: 1 hour hour 20 minutes minutes

Servings: 8 slices

Calories: 192kcal

Recipe by: Helene Dsouza

Ingredients

  • 4-5 Onion medium, max. 2 inch broad
  • 1 Shortcrust OR puff pastry sheet *See Notes
  • 1 Tablespoon Butter to saute onion

For the savory custard filling:

US - Metric

Instructions

  • Peel and slice onion. Keep aside.

  • Prepare the savory custard filling. Combine egg, liquid cream, thyme, salt and black pepper in a bowl to a smooth consistency. Keep aside.

  • Place rolled out pastry dough into a tart pan and cut off extra on the edges. Poke into pastry with a fork to create small holes. That's so that the pastry doesn't deform when baking blind.

  • Preheat oven to 400 Fahrenheit/ 200 Celsius.

  • Place a cut out round baking sheet, which is fitting into the tart base, and keep beans or pie weights on the round cut out baking sheet. Bake your crust alone (called baking blind) for 15 minutes at 400 Fahrenheit/ 200 Celsius. *see notes if you want to skip this step.

  • Heat up a pan with the butter and sautee onions soft. This can take 10-15 minutes (time added to total cooking time in recipe)

  • Place cooked onions into the tart crust and spread out evenly. Pour savory custard mixture over the onions.

  • Bake tart for 30 minutes at 400-430 Fahrenheit/ 200-220 Fahrenheit. *see Notes

Notes

  1. Use either 1 rolled out shortcrust pastry (traditional version) or a puff pastry if you want it to be flakier or a filo pastry works great too.
  2. You can skip the blind baking of your pastry crust if you are lazy or if you want to save time and effort. Add the 15 minutes baking to the filled tart baking time. In that case, the total time will be 45 minutes (15 mins just the crust + 30 for the filled tart). BUT keep in mind baking the crust blind has its advantages. The pastry will be better baked through and won't deform.
  3. Adjust baking temperature to your oven. Not all ovens are the same. Start with higher heat and reduce and adjust if need be.

Nutrition

Nutrition Facts

French Onion Tart Recipe

Amount Per Serving

Calories 192Calories from Fat 117

% Daily Value*

Fat 13g20%

Saturated Fat 6g30%

Cholesterol 61mg20%

Sodium 268mg11%

Potassium 136mg4%

Carbohydrates 16g5%

Fiber 2g8%

Sugar 2g2%

Protein 4g8%

Vitamin A 297IU6%

Vitamin C 5mg6%

Calcium 37mg4%

Iron 1mg6%

* Percent Daily Values are based on a 2000 calorie diet.

This post was first published on the 2nd July 2012 and has been enhanced visually and with better instructions and infos ever since.

French Onion Tart Recipe | MasalaHerb.com (2024)

FAQs

How do you deepen the flavor of French onion soup? ›

My personal go-tos include worcestershire sauce, fish sauce, and brandy. Each deepens the flavor of french onion soup. Balsamic vinegar and soy sauce are other great options.

How thick to slice onions for French onion soup? ›

Directions for French onion soup

Peel each half, keeping the flesh tethered at the root end. Slice 1/4-inch thick longways, pole-to-pole, using a mandolin if you have one.

How do you fix bland French onion soup? ›

Fix a bland onion soup by using supermarket broth and mild white onions, tasteless oil for sauteeing, stale plain white bread instead of croutons, and mild white cheese. Start by reducing the broth. Simmering out some water will intensify the flavor of the broth. Once you get it to the right point, add some salt.

How can I improve my soup Flavour? ›

Use fresh vegetables, high-quality meats or broth, and fresh herbs to add depth of flavor. Add acidity: A squeeze of lemon or lime juice, a dash of vinegar, or a splash of wine can brighten the flavors of a soup and make it taste more complex.

Why are my onions not browning for French onion soup? ›

Not cooking the onions long enough.

→ Follow this tip: Cook times will vary depending on the number of onions you're cooking and the type of onion (its sugar content and age), but plan to cook caramelized onions for 40 to 50 minutes (at least) until they have a dark-brown, rich color.

How to know when onions are caramelized for French onion soup? ›

Caramelizing the onions slowly in butter until they're rich golden brown (but not so dark as to taste bitter) produces the sweetest, most flavorful results. If you don't have homemade beef stock, the recipe's suggested homemade or store-bought chicken stock substitutions are better than most store-bought beef stock.

Does French onion soup taste better the next day? ›

The truth is French Onion soup is usually better the next day. So if you can make it ahead of time, that's to your advantage. It will still be delicious either way. To store any leftovers, place the soup in an airtight container and refrigerate for up to a week.

What spices add depth to soup? ›

Herbs and sources add flavor, aroma, and intensity to the soup broth. You can pick fresh or dried herbs like basil for tomato-based soups or fresh parsley for clear broths. You may also add more spices like turmeric, ground ginger, ground paprika, or nutmeg for a touch of spice and color to your soup broth.

How do you get the depth of Flavour in vegetable soup? ›

A squeeze of citrus, a dollop of yogurt or a drizzle of cream, a dusting of cheese or a good chile powder, a sprinkling of some herbs or croutons — all can take a perfectly fine soup into the realm of the delectable. Even a spiral of good olive oil to finish and some coarse sea salt can do wonders.

How do you add acid to French onion soup? ›

For our French onion soup, you doctor up the beef stock with a little white wine and cognac. They add just the right hit of sweet acidity and complexity; without these ingredients, the stock and onions can be overwhelmingly flat and sweet, so try not to skip them.

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