Meanwhile fry the minced meat until crumbly. Season with salt, pepper and chilli as required and to taste.
Drain the pasta and pour all the ingredients into the baking dish, layer by layer. Put the pasta at the bottom, a dollop of salsa and a dollop of sour cream on top and distribute everything well. Spread the minced meat on top and again a dollop of salsa and sour cream. Then the beans and corn follow, followed by salsa and sour cream again. Then sprinkle the cheese on top.
Put the casserole in the oven for 20 minutes. For the last 5 minutes, distribute the nachos on the edge of the baking dish, sprinkle some nacho crumbs over the cheese and cook to the end.