Preheat oven to 180 C/ 350F.
Grease and line the bottom and sides of a deep 22 cm cake tin with baking paper.
Using an electric hand held or stand mixer, beat butter for 2 minutes or until creamy.
Add sugar and beat for about 5 minutes or until pale and fluffy.
Add eggs, one at a time, beating well after each addition.
Add vanilla extract, orange zest, vegetable oil and cooled caramel syrup.
Beat for 1 minute or until combined.
Add half of dry ingredients mixture, and beat until just combined.
Add the remaining half of the dry ingredients mixture, and beat until combined.
Add soaked fruits. Fold in gently.
The batter will be thick.
Pour batter into the prepared tin and level the top.
Top with chopped nuts and dried fruits.
Tap the cake tin lightly to remove air bubbles.
Bake for 1 hour or until a skewer into the center of the cake comes out clean.
Let the cake cool in the tin for about 10-15 minutes before turning it onto a wire rack to cool completely.
You can spray the cake with rum if you like.