01 -
Preheat oven to 375°F (190°C).
02 -
In a skillet over medium heat, sauté the chopped onion and minced garlic until translucent.
03 -
Add finely chopped mushrooms and cook until softened and most liquid has evaporated.
04 -
Add fresh spinach to the skillet and cook until wilted. Season mixture with salt and black pepper to taste.
05 -
Remove skillet from heat, let the mixture cool briefly, then stir in grated cheese and cream cheese until evenly combined.
06 -
Roll out thawed puff pastry sheet on a lightly floured surface and cut into 24 even squares.
07 -
Place about 1 teaspoon of the mushroom-spinach filling onto the center of each pastry square. Fold pastry over filling to create a triangle or rectangle and seal edges by pressing with fingers or fork.
08 -
Brush the tops of each pastry bite with beaten egg for enhanced color and shine.
09 -
Place filled pastry bites on a baking sheet lined with parchment paper, leaving space between each piece.
10 -
Bake in the preheated oven for 20 to 25 minutes or until pastries are puffed and golden brown.
11 -
Allow pastries to cool on a wire rack for about 10 minutes before serving.