Frequently Asked Questions
What is a Savory Caramelized Tomato Tarte Tatin?
It is a savory version of the classic French upside-down pastry, featuring caramelized red onions, sweet cherry tomatoes, and kalamata olives on a puff pastry crust.
What temperature should the oven be set to?
Preheat your oven to 425ยฐF (220ยฐC) for baking the tart.
What kind of pastry is used for this recipe?
The recipe calls for 14 ounces of thawed puff pastry, usually equivalent to one sheet.
How should I prepare the puff pastry?
Unfold the pastry, cut out a 10-inch disc, cover it with plastic wrap, and keep it in the refrigerator until you are ready to assemble the tart.
How do I caramelize the red onions?
Melt unsalted butter in a skillet, add sliced onions and a pinch of sugar, and cook for 15 to 20 minutes until they are golden brown.
What should I do if the onions stick to the pan while caramelizing?
Add a tablespoon of water to deglaze the pan and scrape up any brown bits if the onions start to stick.
How is the caramel base made?
Combine 1/4 cup of sugar and 3 tablespoons of water in a skillet over medium heat and swirl until it turns amber-colored.
Should I stir the sugar while making the caramel?
No, you should gently swirl the pan instead of stirring with a spoon to ensure the sugar melts properly.
What happens when I add sherry wine vinegar to the caramel?
The caramel will seize up initially, but it will re-melt while the tart is baking in the oven.
What type of tomatoes work best?
Cherry tomatoes or grape tomatoes are recommended; you will need about 1.5 pints, halved.
What kind of olives are included in the recipe?
The recipe uses 1/4 cup of pitted and chopped kalamata olives for a briny flavor.
In what order should I layer the ingredients in the skillet?
Sprinkle olives over the caramel first, followed by halved tomatoes, then the caramelized onions, and finally the seasoning.
Can I use dried thyme instead of fresh?
Yes, you can substitute 1 tablespoon of fresh minced thyme with 1/2 tablespoon of dried thyme.
Why do I need to cut vents in the puff pastry?
Cutting vents allows steam to escape during the baking process, preventing the pastry from becoming soggy.
How long does the tarte tatin take to bake?
It takes approximately 30 minutes in the oven until the pastry is puffed and golden brown.
How long should the tart rest after taking it out of the oven?
Allow the tart to sit for 5 minutes to set slightly before attempting to flip it.
How do I flip the tart without breaking it?
Run a knife around the edges to loosen the pastry, then carefully flip it onto a large plate or pan lid.
Is this recipe suitable for vegetarians?
Yes, this Savory Caramelized Tomato Tarte Tatin is a vegetarian dish.
How many onions are needed for the recipe?
You will need 3 medium red onions, halved and sliced thin.
What size skillet is best for this recipe?
An oven-proof 9-inch skillet is ideal for preparing the caramel and baking the tart.
How much sugar is required for the caramel?
The recipe requires 1/4 cup of sugar plus an extra pinch for the onions.
What is the serving suggestion for this dish?
It is best served warm, cut into wedges, as a light lunch or a party appetizer.
Does the puff pastry need to be chilled?
Yes, keep the puff pastry disc in the refrigerator until the filling is ready to ensure the butter in the dough stays cold for a flaky crust.
What is the role of sherry wine vinegar in this recipe?
The vinegar adds a touch of acidity to balance the sweetness of the caramel and tomatoes.
Can I use other types of onions?
While red onions are specified for their flavor and color, yellow or sweet onions could be used as a substitute.
How do I know when the caramel is ready?
The sugar and water mixture should transform into a rich amber-colored liquid after 5 to 7 minutes.
What seasoning is used?
The tart is seasoned with fresh or dried thyme, salt, and freshly ground black pepper.
Is the tart served upside down?
Yes, like all Tarte Tatins, it is baked with the pastry on top and then flipped so the caramelized vegetables are on top for serving.
How do I ensure the edges are tucked in?
When laying the pastry over the filling, use your fingers or a spoon to tuck the edges down along the inside sides of the skillet.
What is the total preparation and cook time?
Expect about 20 minutes for onion caramelization, 7 minutes for the sugar caramel, and 30 minutes for baking.