These savory hors d'oeuvres can be assembled in advance—ideal for relaxed entertaining. Prep and Cook Time: 1 1/2 hours. Notes: The onion-apple topping can be made up to 2 days ahead. The triangles can be prepared, covered, and chilled the morning of a party, then popped into the oven when guests arrive. They can also be frozen, wrapped well, for up to 3 months (do not defrost before baking).
3 tablespoons unsalted butter
1 pound yellow onions, thinly sliced
About 1/2 tsp. salt
2 Granny Smith or other tart apples, peeled, cored, and thinly sliced
1/4 teaspoon freshly ground black pepper
1 sheet frozen puff pastry, defrosted just before use
3 ounces fontina cheese, shredded
1 tablespoon minced fresh thyme leaves
How to Make It
Melt butter in a large frying pan over medium-high heat. Add onions and 1/2 tsp. salt. Cook, stirring occasionally, until onions are soft, about 5 minutes. Add apples and stir to coat. Reduce heat to medium and cook, stirring often, until onions are medium brown, about 30 minutes. Stir in pepper and salt to taste. Set aside and let cool, about 10 minutes.
Preheat oven to 375°. Unwrap puff pastry sheet. Cut sheet into 16 squares, then halve those squares diagonally to make 32 triangles. Arrange them, not touching, on a baking sheet.
Place a spoonful of cooled onion-apple mixture on each triangle. Top with a sprinkle of shredded cheese and minced thyme. Bake until puffed and golden, 15 to 20 minutes. Serve hot.
Delicious! I assembled then on a baking pan & refrigerated them, covered, until cooking time. Be sure to flour the work surface before working with the puff pastry (my first time) and grease the baking pan. I found that the onion-apple mix made more than enough, and the leftover was great on sliced pork loin. A crowd-pleaser for sure!
These are SOO good - the apple/onion & cheese flavors really complement each other well. These can be frozen after baking for *months* in a ziplox, and when needed, just reheat on 350 x 10 minutes and they are just as tasty! Definitely a keeper and great for company!
I honestly don't understand all the rave reviews. these were very bland. maybe a more flavorful cheese like brie would work better. I'm trying to think of a way to salvage these for the party. maybe a cran/orange relish on top.
Made this as a Thanksgiving appetizer and everyone thought it was delicious. I prepared the onion and apple mixture in advance and assembled the bites the day of. Because the oven was in use for the turkey, we used the toaster oven. It worked fine, but seemed to be done after about 10 minutes' time instead of 15-20. The onion apple mixture yields a TON. We ended up using both sheets of puff pastry (2 in the package I bought) and could have easily have done a third puff pastry. If I were making again, I would halve that mixture.
I made this for two parties and so far and they are the first appetizer to go. I have used both dried and fresh thyme but prefer the fresh. Carmelize the onions in a dutch oven with a lid in the oven. This leaves your hands free to do other things. Stir the onions once in a while and add the apples in the last few minutes.
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