Easy Cheeseburger Soup

Ingredients (16)

• 1 tablespoon olive oil
• 16 ounces lean ground beef
• 2 cups diced onion
• 1 stalk celery,
• 1/2 cup minced carrots
• 1 medium garlic clove,
• 3 tablespoons cornstarch
• 2 cups peeled and diced potatoes,
• 4 cups beef stock or broth
• 14.5 ounces canned diced tomatoes
• 2 tablespoons Worcestershire sauce
• 1 tablespoon Italian seasoning
• 1 teaspoon ground mustard
• 1 1/2 cups half and half cream
• 2 cups grated cheddar cheese,
• chopped parsley,