Step 1: Preparation

1. Preheat the Oven: Start by preheating your oven to 375°F (190°C). This ensures that the puff pastry will cook evenly and achieve a golden-brown finish.
2. Prepare the Pastry: Lightly dust your work surface with flour. Unroll the puff pastry sheets and cut them into squares, approximately 3×3 inches in size.

Step 2: Assemble the Bites

3. Cut the Fillings: Slice the guava paste and cheese into small cubes or rectangles that will fit comfortably within your pastry squares.
4. Fill the Pastry: Place a piece of guava paste and a piece of cheese in the center of each pastry square. Fold the corners of the pastry over the filling to create a sealed pouch, or leave them open for a rustic look.
5. Seal the Edges: Use a fork to press down the edges of the pastry, sealing in the filling and creating a decorative pattern.

Step 3: Baking

6. Egg Wash: Brush the tops of the pastry with the beaten egg. This will give them a beautiful golden sheen once baked.
7. Bake: Place the assembled bites on a baking sheet lined with parchment paper. Bake in the preheated oven for 15-20 minutes, or until the pastry is golden brown and puffed.

Step 4: Finishing Touches

8. Cool and Serve: Allow the bites to cool slightly before serving. Optionally, sprinkle them with a little sugar for extra sweetness or a pinch of salt to enhance the savory notes.