This is my interpretation of a 15th century recipe. The source where I found it recommends using a blender or egg beater to blend the brie and the eggs, but I find that simply tearing the brie into bits and sprinkling them into the egg mixture actually gives the pie a more interesting texture.
For a tea party, consider using tart shells or a mini muffin pan to make individual tarts.
For better color and flavor, "bloom" the saffron by soaking it in a teaspoon of hot water for five or ten minutes before adding to the mixture.
(Originally found in "To The King's Taste, p. 48)