The Reds are 3-0 up from the first leg at The City Ground, courtesy of goals from Marcus Rashford, Wout Weghorst and Bruno Fernandes.
Newcastle United await the victors in the final later this month at Wembley, following their triumph over Southampton.
Jadon Sancho and Anthony Martial are back in the matchday squad after their recent lay-offs.
The forward pair will be looking to be involved against Forest, with Sancho's last outing on 22 October, in the 1-1 draw at Chelsea, while Martial has been absent since being withdrawn at half-time during the brilliant Manchester derby win over City on 14 January.