Mexican Beef Soup

Ingredients

• 1/2 pound ground beef
• 1 medium onion, diced
• 1 cup shredded cooked roast beef
• 3 cans (14-1/2 ounces each) diced tomatoes, undrained
• 2 cans (14-1/2 ounces each) beef broth
• 1 can (4 ounces) chopped green chilies
• 1/2 cup pitted ripe olives, halved
• 1-1/2 teaspoons ground cumin
• 1 teaspoon chili powder
• 1/2 teaspoon dried oregano
• 1/4 teaspoon cayenne pepper
• 1-1/2 cups frozen whole kernel corn
• 1 cup frozen cut green beans
• Salt and pepper to taste