Ingredients

• 450 grams self-raising flour
  
• 2 teaspoons baking powder
  
• 1 tablespoon caster sugar
  
• 115 grams butter, cubed
  
• 230 grams mature Cheddar cheese, grated
  
• 1 apple, peeled and diced
  
• 4 or 5 pickled cocktail onions, roughly chopped
  
• Pinch each salt and freshly ground black pepper
  
• 1 egg, beaten
  
• approx. 200 milliliters milk, plus more for brushing on top