Prepare Ingredients: Gather flour, butter, powdered sugar, salt, water, milk, granulated sugar, cornstarch, eggs, vanilla extract, and fresh raspberries.
Make Pie Crust: Mix flour, powdered sugar, salt, and chilled butter in a food processor. Add water until dough forms. Chill, roll out, and place in a pie dish.
Preheat Oven: Set the oven to 375°F (190°C).
Prepare Filling: Whisk milk, granulated sugar, and cornstarch in a saucepan. Cook until thickened. Remove from heat, whisk in eggs and vanilla.
Assemble Pie: Pour filling into crust. Arrange raspberries on top.
Create Ruffled Edges: Fold and pleat crust over raspberries for a ruffled appearance.
Bake: Place pie in the oven and bake for 25-30 minutes until golden brown and filling is set.
Serve: Let the pie cool slightly, dust with powdered sugar, and serve warm or at room temperature. Enjoy your ruffled milk pie with raspberries!