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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ASIEDU WINFRED TWENEBOAH
w@hotmail.comOverall, I really enjoyed these tarts. They're delicious, easy to make, and perfect for a party.
Terri Luthe
luthet76@hotmail.comThese tarts are a bit pricey to make, but they're worth it for a special occasion.
Iddrisu Zuweira
zuweiraiddrisu@yahoo.comI had some trouble getting the crust to brown. I think I needed to bake the tarts for a few minutes longer.
Arif Hasan
a.h@hotmail.comThese tarts are delicious, but they're a bit too sweet for my taste. I would reduce the amount of sugar in the filling next time.
Jonny Diaz
jd@gmail.comI've made these tarts several times and they're always a hit. They're the perfect appetizer or light lunch.
ike mukoya
i@gmail.comI made these tarts for a brunch party and they were a huge hit! Everyone raved about them.
Naeem Ashraf
n_ashraf67@gmail.comThese tarts are a bit time-consuming to make, but they're worth the effort. They're perfect for a special occasion.
Jacqueline Kelley
jacqueline-kelley@yahoo.comI used a store-bought pie crust to save time. The tarts still turned out great!
M Sufyan Jutt
jm@hotmail.co.ukI'm not a big fan of thyme, so I omitted it from the recipe. The tarts were still delicious!
Justine Chama
chamajustine37@gmail.comThese tarts are so easy to make and they taste amazing! I love the combination of caramelized onions and apples.
Sharoz Khan Sherani
s@gmail.comI made these tarts for my family and they loved them! The crust was flaky and the filling was creamy and flavorful. I will definitely be making these again.
Sojib Mahmud
s_m@gmail.comThese tarts are perfect for a party or a potluck. They're easy to make ahead of time and they're always a crowd-pleaser.
SHERYAR HANJRA
sheryar.hanjra15@yahoo.comI love the combination of sweet and savory in these tarts. The caramelized onions and apples are a perfect match for the Gruyère cheese.
George Zetron
zetrongeorge@hotmail.co.ukThese tarts were easy to make and turned out beautifully. The flavors were well-balanced and the crust was perfect.
Muse
muse89@aol.comI'm not a huge fan of onions, but I loved these tarts! The caramelized onions were sweet and delicious, and they paired perfectly with the apples and cheese.
Muhammad Shahbaz Bhatti
m96@yahoo.comI made these tarts for a party and they were a huge hit! Everyone loved them. The caramelized onions and apples were especially popular.
Amanullah Hassan
amanullahh@hotmail.comThese tarts were absolutely delicious! The combination of caramelized onions, apples, Gruyère cheese, and thyme was perfect. The crust was flaky and buttery, and the filling was sweet, savory, and tangy. I will definitely be making these again!