Mimms had a decent game and made a few saves that got Liverpool a well earned draw and earned him the praise of coach John Owens.
"I couldn't say we deserved to win the game but I was happy with the performance and a draw was a fair result," Owens told the club's official website.
"Josh Mimms did very well on his debut so I was pleased with him and I gave a chance to some of the younger players in the squad who did well.
"It has been a good season and winning the youth cup tops it."
The victorious FA Youth side did a lap of honour at Anfield during half time in yesterday's first team game with Aston Villa.