Rhubarb traybake | Tesco Real Food

Ingredients

• 100g (3 1/2oz) plain flour
• 1/2 tsp baking powder
• 250g (8oz) rhubarb, cut into 1cm (1/2in) slices
• 1 tbsp soft brown sugar
• 125g unsalted butter, at room temperature
• 100g (3 1/2oz) caster sugar
• 2 eggs
• 1 tsp vanilla extract
• 75g unsalted butter
• 75g (3oz) plain flour
• 125g (4oz) soft brown sugar
• 50g (2oz) walnuts, roughly chopped
• 50g (2oz) oats