01 -
Heat olive oil in a skillet over medium-high heat. Season beef cubes with salt and pepper. Sear each side for 2-3 minutes until a golden brown crust forms. Remove from heat and allow to cool slightly.
02 -
In the same skillet, cook mushrooms, shallots, and garlic over medium heat, stirring frequently, until mushrooms release moisture and mixture turns golden brown, about 5-7 minutes. Stir in thyme and season with salt and pepper. Let cool completely to preserve pastry texture.
03 -
Lightly dust a clean surface with flour. Roll thawed puff pastry to approximately 1/8 inch thickness. Cut into uniform 3-inch squares to ensure even baking.
04 -
Place a spoonful of cooled mushroom duxelles onto each puff pastry square. Top with a seared beef cube, optionally brushing with Dijon mustard. Fold pastry over filling to form a sealed pocket, pressing edges with a fork.
05 -
Preheat oven to 400°F (200°C). Arrange bites evenly on a parchment-lined baking sheet. Brush each piece with beaten egg wash. Bake for 15-20 minutes until pastry is puffed and golden brown.
06 -
Allow mini bites to cool briefly before serving to avoid burns. Enjoy warm to experience the contrast of flaky pastry and juicy beef.