Ham and Lima beans help. please.

After looking at recipes for crockpot Lima beans I'm not seeing any that use celery.  My mind tells me I should use a stalk or two of celery as well as some grated carrot.  Am I trying to screw a pot of ham and Lima beans up?

Recipes are guides ment to be bent and twisted to fit your desired outcome 

Except baking, you can’t screw with baking recipes

Does that mean I can't substitute powdered sugar for flour?  They look identical.