Prepare the sausages: Slice the sausages in half, then in half again and cut into cubes.
Prepare the potatoes: Cut potatoes into cubes and keep them in water to prevent discoloration.
Cook the sausages: In a pan with hot oil over medium heat, add the sausages and brown for 7-8 minutes.
Cook the potatoes: In the leftover oil, add potato cubes, season with salt, and fry for 4-5 minutes. Add a splash of water, lower heat, and cover.
Add onion: After 7 minutes, add chopped onion and fry until both potatoes and onion are golden.
Combine ingredients: Add the sausages back in, then add tomatoes and sliced chili. Stir and let cook for 5 minutes.
Finish the dish: Add cilantro and cheese, turn off heat, and cover until cheese melts.