Heat butter in saucepan over medium-high heat
Add onion and celery. Cook until vegetables are tender
Add broth and heat to a boil.
Remove saucepan from heat.
Add stuffing packages to large bowl. Pour boiled vegetables into bowl and stir until well combined
Turn crockpot to High and pour in mixture (spread evenly)
Pour ½ cup of chicken brother evenly over mixture
Cover and cook for 2 ½ hours on high
With one hour left, check on stuffing making sure sides are sticking
Once done, should be very moist
