Step 3: Fold and Seal Fold the empty half of the puff pastry sheet over the cheese and filling to form a clean rectangle. Press the edges down firmly with your fingers or crimp them with a fork to prevent melted cheese from leaking during baking.
Step 4: Cut and Brush Using a sharp knife or pizza cutter, slice the folded pastry rectangle into equal square portions. Brush the tops evenly with the beaten egg wash to give them a golden, glossy finish.
Step 5: Bake to Golden Perfection Bake in the preheated oven for 18 to 22 minutes until the pastry rises into puffy layers and turns deep golden brown. Serve hot while the cheese inside is warm and gooey. 🥐
Culinary Science Behind Puff Pastry Cheese Squares
The secret behind why these savory squares rise so dramatically lies in laminated dough mechanics. Puff pastry consists of hundreds of ultra-thin layers of dough separated by micro-layers of butter.
When high heat hits the cold pastry inside the oven, the moisture in the butter vaporizes instantly. This steam creates pressure between dough layers, expanding them upward before baking the structure into delicate, flaky crispy sheets…
