Cook 4 sausages the night/morning before and put them in the fridge.

In the evening: cook some penne pasta in a pan. Peel a courgette down to the seeds in the middle (so long, thin strips that are mostly white) into a frying pan and fry them WITHOUT adding any oil. In another pan, cook some tinned tomatoes and thyme with the chopped up sausage from the fridge. When it's all cooked, add everything to one pan and mix. Then serve. Takes about 15-20 minutes.