Steps:
- In a large fry pan over medium heat, warm the oil. Add the onions and the 1 tsp. salt and cook, stirring occasionally, until the onions are golden brown, about 30 minutes. Transfer to a large bowl and let the filling cool to room temperature. Position 1 rack in the upper third and 1 rack in the lower third of an oven and preheat to 400°F. Line 2 baking sheets with parchment paper. In the same pan over medium heat, melt the butter. Add the apples and sugar and stir to coat the apples. Cook, stirring, until the apples are just starting to caramelize and have softened, about 10 minutes. Transfer to the bowl with the onions and stir in the cheese, chives, thyme and the 1/8 tsp. pepper. Cut the puff pastry into 2-inch squares and place on the prepared baking sheets, spacing the squares about 1 inch apart. Brush the pastry squares with the egg mixture and place a heaping 1 Tbs. filling in the center of each square. Season with salt and pepper. Bake, rotating the baking sheets from top to bottom and front to back halfway through baking, until the pastry is crisp underneath and golden brown on top, about 25 minutes. Transfer the baking sheets to wire racks and let the tarts cool to room temperature. Serve at room temperature. Makes 32 tarts.
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Rahat Fokir
fokirrahat@gmail.comThese tarts are the perfect comfort food for a cold winter day.
Abdulkareem Surajudeen
surajudeen@yahoo.comI'm not a fan of thyme, so I omitted it from the recipe. The tarts were still delicious.
Akhi Akhter
a_a@hotmail.comI'm not sure if I did something wrong, but my tarts turned out a bit too oily.
Md Tara
tara8@hotmail.comThese tarts are a bit time-consuming to make, but they're worth the effort.
Shaikha Mahra
m@gmail.comI would have liked the tarts to be a bit sweeter, but they were still very good.
Elham Sajid
e_s39@hotmail.frI thought the crust was a bit too thick for my taste, but the filling was delicious.
mischa Smith
mischa.smith@yahoo.comI'm not a big fan of Gruyère cheese, but I still enjoyed these tarts.
Riaan Pietersen
riaan89@gmail.comThis recipe is a must-try for any fan of caramelized onions and apples.
Kashindar Kumar
k@gmail.comI can't wait to try this recipe! It looks so delicious.
Irfan Mushtaq
m.i@yahoo.comI'm so glad I found this recipe! It's a new favorite in my household.
Muhib Saad
muhib@yahoo.comThese tarts are the perfect appetizer or main course for a special occasion.
remis shishi
remis78@yahoo.comOverall, I thought these tarts were delicious and I would definitely make them again.
islam fouda
fouda-islam@gmail.comI had some trouble getting the crust to brown properly. I think I would try baking the tarts at a higher temperature next time.
Tumwebaze Claire
tumwebaze.claire91@yahoo.comThe only thing I would change about this recipe is to use a little less salt. I found the tarts to be a bit too salty for my taste.
Daulis Ngure
d.ngure70@yahoo.comI love that these tarts can be made ahead of time, which makes them perfect for parties.
Abanoub Maged
maged_abanoub@yahoo.comI've made these tarts several times now and they're always a crowd-pleaser.
Trevor Thomas
ttrevor12@gmail.comThese tarts are easy to make and look impressive when you serve them.
Eno-obong Udom
e.udom5@yahoo.comI love the combination of sweet and savory in this dish. The caramelized onions and apples are a great complement to the Gruyère and thyme.
Qasim Al
q@yahoo.comThese tarts were a hit with my family! The caramelized onions and apples were perfectly balanced with the Gruyère and thyme, and the crust was flaky and delicious.