1️⃣ Bake the Puff Pastry:

• Preheat oven to 375°F (190°C).
• Roll out the puff pastry sheets slightly to fit a 9×13-inch baking pan.
• Place each sheet on a lined baking sheet, prick with a fork, and bake for 15-18 minutes or until golden and crispy.
• Let cool completely.

2️⃣ Prepare the Vanilla Custard:

• In a large saucepan, heat milk over medium heat until warm but not boiling.
• In a separate bowl, whisk together sugar, flour, and egg yolks until smooth.
• Slowly add warm milk to the egg mixture, whisking constantly to prevent curdling.
• Return the mixture to the saucepan and cook over medium heat, stirring constantly, until thickened (about 5-7 minutes).
• Remove from heat and stir in vanilla extract.
• Let the custard cool to room temperature.

3️⃣ Assemble the Layers:

• Place one baked puff pastry sheet in a 9×13-inch pan.
• Spread the cooled custard evenly over the pastry.
• Top with the second puff pastry sheet, pressing gently.

4️⃣ Chill & Serve:

• Refrigerate for at least 4 hours (or overnight) to set.
• Before serving, dust the top with powdered sugar.
• Slice into squares and enjoy!