Precook your mushrooms and onions until caramelised.
Once cooked, start to stuff your squid tubes. Start with onion/mushroom at the bottom, then add the strips of pepper and feta in variations so the flavour is constant. Once plump, place on baking tray ready for the oven.
Sprinkle your squid with a bit of sea salt and pepper.
Bake in the oven for 25 minutes. Flip over after 12 minutes.
While your squid is baking, cook your honey and mustard together in a small saucepan until a nice thin sauce consistency is formed.
Remove your squid from the oven, serve hot or cold with a light dashing of the honey mustard sauce.