Defrost your brussels in the microwave for 2 minutes.
To a non-stick frying pan, add 1 tbsp of olive oil along with the sprouts. Fry for around 5-6 minutes. Set aside.
Meanwhile, butter or add oil to both sides of your bread (approx. 1 tbsp per 2 pieces of bread). Then, coat one side of each piece of bread with a thin layer of marmite. Adjust Marmite quantity depending on preference. I love a lot!
To a non-stick frying pan. Place the bread butter-side down, so the Marmite is facing upwards.
Leave to toast for a couple of minutes and then add a layer of Camembert, ham and brussels. Close the sandwich and fry on each side for two minutes, until the bread is crispy and the cheese has melted. Enjoy!