Easy smoked salmon and cream cheese canapés

Name: Easy smoked salmon and cream cheese canapés
Ingredients: 125g/4oz wholemeal flour; 125g/4oz plain flour, plus extra for dusting; 7g (1 heaped tsp) caster sugar; ¼ tsp baking powder; ½ tsp bicarbonate of soda; ½ tsp table salt; 30g/1oz porridge oats, plus extra for topping; 50g/1¾oz treacle; 5 tbsp Irish stout; 20g/¾oz salted butter, melted; 100ml/3½fl oz buttermilk; 1 large free-range egg, beaten, to glaze; 180g/6¼oz cream cheese; ½ lemon, juice only; 200g/7oz smoked salmon, finely chopped; handful chopped fresh chives or dill, to garnish; salt and freshly ground black pepper