Early goals from Tinashe Chakwana and schoolboy Lewis Richardson were enough to give the Clarets the victory that lifts them back into a play-off spot in the Professional Development League.
Burnley never hit any great heights on a windy afternoon at the Barnfield Training Centre after the fixture was switched from Curzon Ashton.
But with Nick Pope and Kevin Long – partnered by the returning Olly Young – drafted in to get the senior pair some game time, a Watford side featuring five trialists never promised to threaten the Clarets’ lead as Steve Stone’s men got back on the winning trail.