Make up the beef stock and leave it to cool
Heat the oven to 190C (fan)
Heat a drizzle of oil in a non-stick pan. Add the sliced onion and fry on a medium heat for 10 minutes, stirring regularly until the onions are soft and coloured
Add the honey and fry for a further 5 minutes. Set aside to cool
Place the flour in a large mixing bowl. Stir in the baking powder, black pepper and Thyme and season with salt
Add the butter. Use your fingertips to rub it into the flour until it disappears
Mix in the grated mozzarella, cubed cheddar and fried onion until evenly mixed
Add the beef stock. Use your hands to mix it together until you have a smoothish dough
Place the dough on a large greased or lined baking tray, press it down until you have a thick circle roughly 20cm across
Brush the top of the loaf with a little milk
Bake in the oven for 30 minutes or until golden brown and cooked through. If the top is cooking too quickly, cover it with foil for the last minutes of baking
Leave to cool before cutting into wedges when it's still a little warm
