A sweet and tangy onion/mushroom mixture tops crispy puff pastry for an easy and delectable appetizer.
Course Appetizer
Keyword Vegan Onion and Mushroom Squares, Caramelized Onion/Mushroom Puffy Squares,
Prep Time 10 minutesminutes
Cook Time 50 minutesminutes
Total Time 1 hourhour
Servings 20
Ingredients
1large onion, diced
8ozpkg sliced white or bella mushrooms, diced
3tbspolive oil
1/2tspdried thyme
1/2tspsalt
1/4tspground black pepper
1tbspbalsamic vinegar (see Note below)
1sheetpuff pastry, thawed
1tbspfresh parsley, finely chopped
Instructions
In a large skillet, heat the olive oil on medium-low heat. Add onion and thyme, cover and cook about 10-15 minutes until the onions are golden, stirring occasionally. Add small splashes of water if onions start to brown too much or stick to the pan.
Preheat oven to 425 degrees F. Line a baking sheet with silicone mat or parchment paper.
Add mushrooms to skillet and cook about 8-10 minutes, stirring occasionally. Stir in the salt, pepper and vinegar. Cook for one minute longer. Remove from heat and cool about 10 minutes.
While the mixture is cooling, unfold the pastry sheet and roll out as thinly as possible. Spread the onion/mushroom mixture evenly over the pastry.
Bake for 25-30 minutes until the pastry puffs and is golden brown. Sprinkle with parsley. Use a pizza cutter to slice the pastry into 20 squares. Serve warm. Enjoy!
Notes
Balsamic Vinegar- use the thickest, darkest, most syrupy balsamic you can find -- for richer flavor.