Southwestern Soup

Ingredients

• 1 lb ground beef
• 1/2 cup onion, chopped
• 1 (1 1/4 ounce) packet taco seasoning mix
• 1 (1 ounce) packet ranch dressing mix
• 1 (14 ounce) can beef broth
• 1 (15 ounce) can kidney beans
• 2 (15 ounce) cans pinto beans
• 1 (15 ounce) can white corn, whole kernel
• 1 (15 ounce) can chopped tomatoes
• 1 (10 ounce) can tomatoes, with chiles (Rotel)
• 2 cups Fritos corn chips (small chips)
• 1 cup cheddar cheese, grated