Mexican 3-Bean Soup

Ingredients

• 1 lb ground beef
• 1 onion, diced
• 2 (15 1/2 ounce) cans kidney beans
• 2 (16 ounce) cans pinto beans
• 2 (15 1/2 ounce) cans navy beans
• 1 (15 ounce) can corn
• 1 (14 1/2 ounce) can stewed tomatoes
• 1 (14 1/2 ounce) can tomatoes and green chilies
• 1 (1/4 ounce) package taco seasoning mix
• 1 (1 ounce) package ranch dressing mix