Crock Pot Japanese Onion Soup

2 medium carrots 2 medium celery stalks 2 garlic cloves, smashed 6 cups organic chicken broth or vegetable broth [for all you vegetarians] 1 medium onion, wedged 8 ounces mushrooms, sliced 4 green onions, sliced Place everything but the mushrooms and green onions into a slow cooker. Add in the bottom halves of the chopped green onions at…