Add broth, sweet potatoes, onion, celery, and garlic to a 4-quart slow cooker.Cook on low for 8 hours or high for 5 hours (or until potatoes are soft). *Turn off slow cooker and add plant milk, tarragon and Pinch Perfect Seasoning and blend 1-2 minutes with an immersion blender until soup is smooth. **Stir in baby spinach, cover and let sit for 20 minutes until spinach is soft.Ladle into soup bowls.Sprinkle each bowl with 1 tbs sliced almonds, sea salt and ground black pepper to taste.