Preheat your oven to 160°C (320°F) and line a muffin tin with mini cake liners.
In a large mixing bowl, cream together the softened butter and brown sugar until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
In another bowl, sift together the flour, baking powder, cinnamon, and nutmeg.
Gradually add the dry ingredients to the wet mixture, stirring gently until combined.
Fold in the mixed dried fruit gently until evenly distributed.
Spoon the batter into the prepared muffin tin, filling each liner about two-thirds full.
Bake in the preheated oven for 20-25 minutes or until a skewer inserted comes out clean.
Allow the mini cakes to cool in the tin for 10 minutes before transferring to a wire rack.
While the cakes cool, prepare the ganache by heating the double cream until it just begins to simmer.
Pour the hot cream over the chopped dark chocolate and let it sit for a minute before stirring.
Once the mini cakes are cool, drizzle the ganache over each cake generously.
Garnish with additional dried fruit or festive decorations, if desired.
Let the ganache set before serving for a perfect finish.