Preheat oven to 190℃ (170℃ fan-forced).
Grease a lamington tin and line with baking paper.
Boil the sultanas and figs in 1 1/2 cups of water for 5 minutes, then drain and allow to cool.
Add the butter and sugar to the drained fruit and mix until the butter has melted and the sugar has dissolved.
Stir in the flour, then press into the prepared tin, smoothing the mixture on the top.
Bake in the oven for 25-30 minutes. Allow to cool for ten minutes before turning out onto a wire rack. Cool completely before cutting into squares.
Store in an airtight container for up to three days.