Apple bake with mixed spice

Ingredients

• 500 g sweet apples with the skin, cut into wedges
• 100 ml strong Rooibos tea
• 1 cinnamon stick
• 1 cup (250 ml) buttermilk
• 100 ml low-fat milk
• 1 tbsp (15 ml) vanilla essence
• 2 eggs
• 1 tbsp (15 ml) finely grated lemon rind
• ¼ cup (60 ml) ground almonds
• 100 ml cake flour
• ½ tsp (2,5 ml) baking powder
• 1 tbsp (15 ml) sugar
• ½ tbsp (7,5 ml) ground mixed spice
• 1 tsp (5 ml) icing sugar mixed with a pinch of ground mixed spice
• 175 ml plain low-fat yoghurt