- Place racks inward the upper as well as lower thirds of your oven as well as preheat oven to 400 degrees F. Line 2 large baking sheets amongst silicone baking mats or parchment paper. Set side.
- In a large skillet over medium depression heat, oestrus 1 tablespoon olive crude as well as add together the onions as well as salt. Sauté the onions until get-go to brown, thence cut back oestrus to depression as well as move along to cook, stirring occasionally, until deeply golden as well as caramelized, most 25 minutes total. Remove the onions to a large bowl as well as laid aside.
- In the same skillet, oestrus the remaining tablespoon olive crude over medium depression as well as sauté the mushrooms until tender, most five minutes. Add garlic, thyme, as well as dark pepper as well as sauté 1 additional minute. Place inward the bowl amongst the onions. Stir inward the cheese.
- On a lightly floured function surface, curl out the puff pastry into an fifty-fifty 10.5-inch square. With a 2-inch circular cookie or biscuit cutter, cutting the pastry into rounds (alternatively, yous tin flame spell the puff pastry into squares). You should convey some five rows of five rounds (25 full rounds per sheet). Transfer the cutting puff pastry to a prepared baking sheet, thence brush lightly amongst the beaten egg. Prick each circular amongst a fork to allow air to escape, thence tiptop each circular amongst a scant 1/4 teaspoon of the whole grain mustard, thence 1 tablespoon of the mushroom as well as onion filling. Repeat amongst the 2nd pastry sheet.
- Bake for 25 minutes, until the pastry is golden as well as crisp, rotating the pans 180 degrees as well as switching the positions of the baking sheets on the upper as well as lower racks halfway through. Let bites cool five minutes. Garnish amongst fresh parsley as well as serve warm or at room temperature.
Original Recipes visit: Cheesy Mushroom Puff Pastry Bites @ wellplated.com