Brown ground beef and chopped onion in a large pot or Dutch oven.

Drain any excess fat from the beef.

Add the rinsed and drained pinto beans, kidney beans, and lima beans to the pot.

Add the drained hominy to the pot.

Pour in the stewed tomatoes, chopped green chilies, tomato sauce, and water.

Season with salt, pepper, taco seasoning, and Ranch dressing mix.

Bring the mixture to a boil, then reduce heat to low.

Simmer for 30 minutes, allowing the flavors to meld.

Serve hot, topping each bowl with shredded cheese.

Serve with tortilla chips and sour cream as desired.