Heat olive oil in a pan. Add diced onions and fry until onions are translucent.
Fry the ground beef and add salt and pepper. Then mix in the beans and salsa. Add tomato sauce and continue to stir.
Layer a layer of chilli, then Doritos, then cheese in a baking dish. Place two tortillas on top of the layers and press down. Pour another layer of chilli, Doritos and cheese each. Sprinkle with jalapeños.
Bake at 180 ° C for 25 minutes. Serve with sour cream, salsa and spring onions.