Preheat oven to 180C (360F).
Grease a 24cm tart tin with a removable base.
Combine the ricotta, eggs and 1/4 cup of caster sugar and mix well with a whisk.
Sprinkle extra caster sugar on a clean surface and roll the pastry out to fit the tart tin, with 2-4cm extra overhang.
Carefully spread the marmalade over the tart base, then gently spoon on the ricotta.
Arrange the apricots over the top, nestling them in the ricotta, but not too deeply.
Gently fold over the pastry around the edges, sprinkle with a little more sugar if desired.
Bake 20-30 minutes, until pastry is lightly browned and the filling is set.
Cool for 10 minutes before serving.