We secured a 3-1 win on the night - Anthony Georgiou firing us ahead in the first period, only for Marcus Rashford to level from a free-kick five minutes later.
Ismail Azzaoui restored our lead in the second period, before Georgiou doubled his tally to confirm our place in the competition's last eight.
Spurs: Voss, Walker-Peters, Walkes, Amos, Maghoma, Carter-Vickers, Georgiou, Stylianides (Owens, 83), Harrison (Sterling, 79), Onomah (c), Azzaoui (Edwards, 73). Substitutes (not used): Loft, Glover (GK).
Manchester United: Henderson; Reid, Tuanzebe (C), Williams, Borthwick-Jackson; Fosu-Mensah, Redmond; Riley, Gribbin, Dearnley (Mitchell, 72); Rashford. Substitutes (not used): Thompson, Croskery, Scott, Dorrington (GK).