Brown diced chuck steak in hot oil and set aside.
In a medium frypan, heat oil and cook onions 3-4 mins. Add garlic and cook until fragrant, 1-2 minutes, until golden.
Sprinkle in gluten free flour and mix in.
Add the meat and juices to the onions and add O'Briens Stout, and beef stock. Season with salt andpepper. Bring to the boil. Reduce the heat and simmer for 2 hours until tenderand the sauce has thickened.
Preheat the oven to 200 degrees celsius.
Spoon the beef mixture into four oven proof ramekins.
Cut out 4 circles of gluten-free, ready-rolled puff pastry to cover the ramekins. Press firmly onto the ramekins and seal. Brush pastry with egg yolk.
Bake for 25 minutes.