Prepare Slow Cooker: Lightly grease or line the slow cooker with parchment paper.
Soak Dried Fruit: Combine dried fruit and fruit juice in a bowl. Let sit for 30 minutes.
Mix Batter: Add brown sugar to the fruit mixture and stir. Gradually fold in self-raising flour.
Cook Fruit Cake:
Pour batter into the slow cooker.
Cover with a lid and a clean kitchen towel to absorb condensation.
Cook on low for 2.5-3 hours, or until a toothpick inserted comes out clean.
Cool and Serve: Let cool in the slow cooker for 15 minutes. Transfer to a wire rack to cool completely before slicing.
