The BBC Two cookery competition logged 4.35 million (18%) in the 8pm hour, gaining nearly 400k week-on-week and nearly matching Holby City's ratings on BBC One.
For the last 15 minutes of its airing from 8.45pm, Bake Off had more viewers than Holby City.
ITV's first Champions League group stage match, a thrilling 3-2 win for Real Madrid over Man City, scored an average of 4.7m (20.2%) between 7.30pm and 10pm, peaking with over 6m at around 9.15pm.
Derren Brown's magic attracted 1.94m (9%) to Channel 4 from 9pm until 10.30pm, adding 355k (2.5%) an hour later on +1, while Vikings logged 1.97m (8.6%) on BBC Two, and Person of Interest soared to 1.01m (4.3%) on Channel 5 (+1: 194k/1.1%).
Over on BBC One, DIY SOS took 3.51m (15.1%) in the 9pm slot.
Double Your House for Half the Money picked up 1.21m (5%) on Channel 4 from 8pm, and appealed to a further 241k (1%) on timeshift. Channel 5's royal documentary - Wills and Kate: Baby Fever - interested just 565k (3.3%) at the same time.
Overall, BBC One topped primetime with 20.7%, beating ITV1's 19% (+1: 0.4%). BBC Two claimed third place with 10.3%, comfortably ahead of Channel 4's 6.2% (+1: 0.9%), and Channel 5's 3% (+1: 0.4%).
Bad Education's first series finale drew 598k (3.1%) for BBC Three at 10pm, adding 184k (5.5%) for its 12.30am catchup - some way off its highs of over 1m a few weeks ago.
Don't Tell the Bride, also on BBC Three, was the best-rated multichannel broadcast with 869k (3.8%) in the 9pm hour.
BARB ratings data supplied by Attentional