@Downbutnotout - one of my favourite meals also happens to be one of the easiest!
Sausages and roasted vegetables.
Brown some low carb sausages (The Black Farmer ones are really good, but most supermarket premium brands are low in carbs; always check the back of the pack, but you're looking for very high meat content sausages. They should be less than 2g carbs per sausage)
Then cut up some low carb veg into chunks - or example, shallots, leeks, fennel, courgettes, cauliflower, and add a red or yellow pepper into the mix as well. If you like you can chuck in a chopped chilli and some garlic cloves.
Put the sausages and the chopped veg into a roasting tray.
Season well with salt and pepper , then drizzle very generously with olive oil.
Roast in a hot oven for 20 minutes; take it out and stir it all round, then turn the oven down to medium and roast for another 20 minutes until things are nicely cooked and starting to char.