Oaty plum gingerbread slice - Master recipes

Ingredients

• 140g unsalted butter , plus extra for greasing -
• 100g dark soft brown sugar -
• 100g golden syrup -
• 6 small plums (about 250g prepared weight) -
• 140g plain flour -
• 1 tsp baking powder -
• 1 tbsp ground ginger -
• 1 heaped tbsp chopped stem ginger -
• 85g porridge oat (not jumbo) -
• 2 large eggs , beaten, at room temperature -
• 25g plain flour -
• 25g porridge oat -
• 2 heaped tsp chopped ginger -