- Melt butter in medium saucepan over medium heat 
- Once melted- whisk in flour to make a roux - cook 1-2 minutes 
- Slowly add milk & water - whisking briskly to fully incorporate & keep milk from scalding 
- Keep whisking 5-8 minutes to thicken sauce 
- Remove from heat, add french onion mix, teriyaki, cheese & parsley - whisk in well 
- Serve warm 
- Ladle over your grilled chicken 
- garnish with additional parsley after plating.