Caramelized Onion & Apple Mini Tarts

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These tarts are super simple to prepare, yet make for an elegant presentation. Not to mention the unexpectedly delicious flavor combination!

I was skeptical, at first, of how well onion and apple would go together; but give it a try, and you won’t regret it!

To make 6 servings (about 20 mini tarts), you will need:

  • 1 sheet of frozen puff pastry dough, thawed
  • 2 tbs butter
  • half of a large onion
  • 2 apples (Granny Smith or another tart variety)
  • 1/4 tsp freshly ground black pepper
  • 1/3c fontina cheese, shredded
  • 1 tsp minced fresh thyme
  • 1/2 tsp salt

Start out with the prep work.

Slice/chop the onion very thinly.

Peel and core the apple, and chop it into pieces approximately the same size as the onion.

I learned a lesson here. I chopped the apple slightly larger than the onion, and some of the onion bits ended up burning. Don’t be like me!

Heat the butter in a saute pan over medium. Once it’s melted, add the onions and 1/4 tsp of salt. Saute onions until soft, about 5 minutes.

Add the apples, and reduce the heat to low.

Cook over low for about 30 minutes. The onions should be nice and caramelized, and lightly browned. Stir in the pepper and remaining salt. Remove from heat and let cool.

Preheat the oven to 375 degrees F, and line a baking sheet with parchment paper.

Unwrap and unfold the puff pastry dough. If you find it’s too “floppy” to work with, give it a chill in the freezer for 5 to 10 minutes to firm back up a bit.

Slice along the folds already present in the dough, creating 3 even “strips” of dough.

(Note: In this pic, one of the strips is not pictured). Cut each strip into 3 squares, then slice diagonally through each square to create 2 triangles. This should result in 18 triangles from the entire sheet of dough.

Place each dough triangle on your prepared baking sheet, without touching.

Spoon about 2 teaspoons of the onion-apple mixture onto each dough triangle.

Sprinkle some of the grated fontina cheese on top. Sprinkle thyme on top of the cheese.

Bake for 15 to 20 minutes, and serve warm! Oops, as I mentioned earlier, some of the onions on my tarts burned. They were salvageable, though – I just picked off the badly-burned bits.

Yum! The great thing about these tarts is that you can caramelize the onions-apple mixture and store it in the fridge up to two days beforehand. You can assemble the tarts one day before you serve them, and just store in the fridge, wrapped in cling wrap or foil on a baking sheet. Just pop them into the oven when you are ready!

Hope you enjoy! :)

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  • Lynne @ CookandBeMerry

    These look delicious and pretty easy. Your photos make me want to pick one up and take a big bite. Don’t you just love puff pastry?

  • Amy (Sing For Your Supper)

    Wow, these look SO good! What a perfect appetizer!

  • joudie’s Mood Food

    This is gorgeous. I love the combination. I have to have one of these! Any left? :)

  • admin

    @ joudie: Thanks! Ah, *coughs*…. none left, sorry. I blame the husband.
    @ Amy: Thank you! I’m hoping they will work out for my Halloween party, anyway. I need some savory stuff to balance out the sugar overload!
    @ Lynne: Thank! I absolutely ADORE puff pastry. Its texture is just so perfect. I’m hoping to get a post up on how to make your own soon… stay tuned!

  • Amanda

    Oh that looks delicious! I’ll have to keep this in mind next time I make appetizers!

  • Caitlin

    What pretty little treats! The combo of the onion and the apple is something I never would of thought of, but it sounds great!

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