Preheat your oven to 350°F (175°C).
Blend margarine, eggs, sugar, salt, milk, vanilla extract, and flour until smooth.
Pour the mixture into a greased 9-inch pie dish.
Bake for 45-50 minutes, or until the custard sets and the top is lightly browned.
Let it cool to room temperature before serving.
Slice into this enchanting Magic Crust Custard Pie and savor the creamy custard filling and its magically formed crust – a perfect treat for any occasion.