Colin Calderwood fielded a mainly Under-19 team with only Ben Thatcher, John Piercy and Alton Thelwell boasting Premiership experience. Anthony Elding, a trialist from Boston United, started up front.
Chances were few and far between in the first half with play concentrated in the middle third of the field.
Forest had the greater share of the possession and carved out the best opportunity of the half with 18 minutes on the clock.
Gray played a one-two with Cash and his low cross found Harewood at the near post only for Gavin Kelly to block his close-range effort. The rebound fell kindly for Lester but with Kelly still on the floor, Stephen Kelly did superbly to block the follow up.
Elding had a half-chance after good work from Galbraith on the half-hour but his attempted lob was claimed at full stretch by Roche. Piercy also fired wide on a couple of occasions.
Other highlights of the half included Gray's rasper just over, Reid's 30-yarder claimed comfortably by Kelly and Harewood firing wide from a tight angle after latching onto a rare mistake from Thelwell.
The home side started the second half brightly and took the lead after 56 minutes. Gray burst into the box, reached the byline and his cut back was bundled in by Cash.
We responded well and Snee was unlucky to see his goalbound volley unknowingly deflected wide by Foy. O'Donoghue then headed Piercy's corner fractionally wide.
Lested steered Foy's cross inches wide as Forest continued to press down the flanks, although our defensive unit held firm.
Jackson made his long-awaited return after knee trouble with 20 minutes left and immediately added another dimension to our passing game from the centre of midfield.
But Forest should have doubled their score when Harewood completely missed Cash's cross in front of goal and Kelly saved well as the same player got through one-on-one with six minutes left.
Kelly produced the save of the game to tip Reid's 25-yard free-kick over the bar and Gray, unchallenged, somehow managed to head the resulting corner wide at the far post.
The impressive Kelly then denied Reid again, this time with the midfielder through on goal. And that was about that.
Forest Reserves: Roche, Thompson, Foy, Jones, Dawson, Vaughan, Cash, Gray, Lester (Love, 65), Harewood, Reid.
Spurs Reserves: G Kelly, S Kelly, Thatcher (Henry, 62), O'Donoghue, Thelwell, Piercy, Snee, Bowditch (Ferguson, 65), Elding, Kamanan, Galbraith (Jackson, 72).
Our gritty young reserve side were beaten by Brian Cash's second half goal at Forest's City Ground on Monday night.