Instant Pot Instructions:

1. Turn Instant Pot to saute setting. When display says HOT add in the butter and let it melt. Add in the onion and saute for 3 minutes. Add in the garlic and saute for 30 seconds. 
2. Pour in the water and scrape bottom of pot. 
3. Add in chicken base, Italian seasoning, carrots, celery, chicken and orzo. 
4. Cover Instant Pot and secure the lid. Make sure valve is set to sealing. Set the SOUP button to 1 minute. When time is up move valve to venting for a quick release. If foam starts escaping then move the valve back to sealing for 20 seconds before trying again. Remove the lid.
5. Zest the lemon and juice the lemon. Stir the zest and juice into the Instant Pot. 
6. Ladle into bowls and serve.

Slow Cooker Instructions:

1. Heat a pan over medium high heat. Add in the butter and the onion and saute for 3 minutes. Add in the garlic and saute for 30 seconds. Add to the slow cooker.
2. Add in water, chicken base, Italian seasoning, carrots, celery, chicken and orzo. 
3. Cover and cook on low for 3-4 hours or on high for 2 hours. 
4. Zest the lemon and juice the lemon. Stir the zest and juice into the slow cooker. 
5. Ladle into bowls and serve.