Taco soup

Ingredients

• 1 lb ground beef, browned and drained
• 1 onion, chopped
• 1 package Ranch Dressing seasoning mix
• 1 package taco seasoning mix
• 2 cups water
• 2 14.5 ounce cans diced tomatoes with green chilies
• 1 15 ounce can pinto beans, drained and rinsed
• 1 15 ounce can black beans, drained and rinsed
• 1 15 ounce can corn, drained