Savory Meat Pie with Plain Puff Pastry

Divide and Roll Out the Dough: Divide the dough into two equal parts. Roll out each part into a thin sheet, large enough to fit your 25 cm by 25 cm baking mold.
Brush with Butter: Brush each sheet of dough with melted butter. This step will help create the flaky layers typical of puff pastry. Fold the dough as shown in your reference video (typically in thirds or quarters) to incorporate the butter into layers, then roll the dough out again to fit the size of your baking mold.
Line the Mold with Dough: Place one sheet of dough into the mold, pressing it gently into the edges and corners to form the base. Make sure there is enough dough to form a rim around the edge of the pie.
See also American Bread Recipe
Step 4: Add the Filling

Add the Minced Meat Filling: Spread the cooled minced meat mixture evenly over the dough in the mold. Be sure the filling is distributed evenly across the base.
Step 5: Cover the Pie