Blood Orange Upside-down Cake Recipe | Tesco Real Food

Ingredients

• 380g caster sugar
• 2-3 blood oranges (about 550g), 1 zested, all cut into 3mm slices
• 180g plain flour, plus extra for dusting
• 2 tsp baking powder
• 10g fresh rosemary, leaves picked and finely chopped
• ¼ tsp fine salt
• 180g unsalted butter, at room temperature, plus extra for greasing
• 3 large eggs, at room temperature
• 4 tbsp milk
• mascarpone, to serve (optional)