A little while ago, on a visit to Annisquam, Massachusetts, my friends Ann and Nick hosted an “Impress the Food Blogger” dinner at their home. Guests were encouraged to bring a favorite dish, and we all got to vote on what we thought would be a hit on the site.
The evening was a blast, the votes were tallied, and the winning dish? This caramelized onion tart, or pizza as it was called, brought by Ann’s friends Jeff and Marilyn.
I’ve made this tart several times since I first had it, and it’s one of those dishes you want to limit to special occasions, because it’s really hard to stop eating, it’s that good. Crispy, pillowy puff pastry, with balsamic caramelized onions, topped with sprinklings of gorgonzola, brie, and tarragon.
The original caramelized onion pizza recipe is from Marilyn and Jeff’s friend Bonnie Stern,
Caramelized Onion Tart with Gorgonzola and Brie Recipe
PrintTarragon is a summer herb, if you can't find any, you may crush a few fennel seeds (maybe half a teaspoon) and sprinkle over the tart. Or top with fresh chopped fennel fronds, after the tart has been taken out of the oven.
Ingredients
- 2 Tbsp olive oil
- 4 cups of sliced onions, sliced root-to-top into 1/4-inch thick slices (about 2-3 med onions)
- 1 Tbsp brown sugar
- 2 Tbsp balsamic vinegar
- 1/2 tsp salt
- 1/2 tsp pepper
- 8 oz frozen puff pastry (defrosted a couple hours in the fridge)
- 2 oz chilled Brie cheese, rind removed and diced
- 2 oz Gorgonzola or other blue cheese, diced
- 2 Tbsp chopped fresh tarragon
Method
1 Caramelize the onions: Heat oil in a large deep pan on medium-high heat. Add onions and cook for about 10 minutes or until wilted and starting to brown. Add sugar, vinegar, salt and pepper.
Reduce heat and cook gently, uncovered for 20-25 minutes or until richly caramelized. Add a little water if the onions look like they are starting to dry out. Cool.
2 Roll pastry into a 10-to-14-inch rectangle (or whatever shape you want). Place pastry on a baking sheet lined with parchment paper. Prick with a fork at a couple inch increments to prevent the pastry from forming big bubbles while baking.
3 Spread onions over pastry, all the way to the edges of the pastry. Dot with cheese. Sprinkle with tarragon. Refrigerate if not baking immediately.
4 Bake in a preheated oven at 400°F for 18-20 minutes or until cheese has melted and pastry is crispy. Cool for 5 minutes. Cut into wedges or squares and enjoy!
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Can you freeze after baking or should you freeze pastry raw then cook?
The taste is fantastic and the edge pieces perfect…how can I get the middle of the pastry to puff (or at least cook enough so that it’s not gooey)? I tried prebaking the pastry for 8 minutes before I added the toppings. Maybe I should have done it longer??
Will parsley or basil work in place of tarragon.
This recipe is great…quick and easy. I reduced the vinegar to 1T and the brn sugar to 1 t. I also added wine to deglaze. Oh, yum! I can see that there could be many variations to this basic recipe, but the onions are a must! Thank you!
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This looks so delicious!
Right now easy meals are a must, as I have a broken leg and ankle.
I’m curious.
What were the original amounts of the onion and cheese?