Preheat oven at 225C.
Boil the potatoes & carrots in some water with the stock cube. Cook them half way through.
In a bowl, mix the olive oil, smoked paprika, garlic powder, onion powder, curry, lemon juice, salt & pepper.
Start by pouring half the oil mixture at the bottom of the sheet pan & spreading it all over.
In a large container, mix the remaining oil mixture with the potatoes, carrots, green beans, sweet corn & cherry tomatoes.
Place the meat & the sausages in the pan. Season them with salt & pepper.
Then add the vegetables to the pan, spreading them on the pan.
Spread the butter cubes & fit them in between everything.
Cover the dish with aluminium foil & cook in the oven for 60 minutes.
Uncover the dish & continue cooking it in the oven for 15 minutes.