Christmas Upside Down Cake

Topping

• 60 g unsalted butter, diced, plus extra for greasing
• 60 g light brown sugar
• 100 g mixed dried fruits
• 50 g golden raisins
• 8 - 12 glacé cherries, cut in half

Cake

• 300 g unsalted butter, diced
• 340 g brown sugar
• 300 g self-raising flour
• 6 eggs
• 2 tsp baking powder
• 2 tsp vanilla extract
• 2 tsp lemon zest
• 70 g water
• 6 tbsp dark rum (optional)