In a bowl, combine ground beef, finely chopped onion, and taco seasoning mix.

Shape the mixture into 4 hamburger patties.

Heat a large skillet over medium heat.

Cook the patties in the skillet until no longer pink in the center, about 4 minutes per side. Ensure an instant-read thermometer inserted into the center reads at least 160 degrees F (70 degrees C).

Drain any excess fat from the skillet and wipe it clean with a paper towel.

In a separate bowl, mix condensed bean with bacon soup and water.

Pour the soup mixture over the patties in the skillet.

Simmer until the soup mixture is heated through, approximately 5 minutes.

Mix in diced fresh tomato, shredded Cheddar cheese, crushed corn chips, and sliced olives.

Continue cooking until the cheese has melted.

Scoop out the taco burgers and serve immediately.