Put oil in a pan on low heat. Add the beef and then stirr for a while. Slice the onion then add onions and salt. Stirr for few minutes until the beef becomes soft. Then add mushrooms, ketchup sauce and then again stirr. Cover the pan until the water inside dries up.

Preheat oven at 350 degree F or 177 degree C for 10 minutes. Put nachos on a tray. Add a layer of grated cheese. Nd another layer of the beef mixture. Now put another layer of tomato sauce. Repeat this process again to put more layers

Put it in the oven. Take it out after 10 minutes. Nd it's ready to serve