Preheat your oven to 325°F (165°C). Grease and flour a 9-inch round cake pan or line it with parchment paper.
In a medium bowl, combine the mixed dried fruit and chopped nuts. Set aside.
In another bowl, whisk together the flour, baking powder, cinnamon, nutmeg, and salt.
In a large mixing bowl, cream the softened butter and brown sugar together until light and fluffy.
Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract and orange juice.
Gradually add the dry ingredients to the wet mixture, mixing until just combined.
Fold in the fruit and nut mixture until evenly distributed throughout the batter.
Pour the batter into the prepared cake pan and smooth the top with a spatula.
Bake for 50-60 minutes or until a toothpick inserted in the center comes out clean.
Allow the cake to cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.