The defender's first Premier League goal extended the Toffees' unbeaten streak to seven matches while denying the host side a third straight top-flight win.

Yoane Wissa headed the Bees in front in first-half stoppage time with his 13th league goal of the season.

But the visitor – for which the in-form Beto saw two golden opportunities go begging in the opening 45 minutes – ensured a share of the spoils when O'Brien converted with a diving header from Vitalii Mykolenko's 77th-minute cross.

Beto squandered another gilt-edged chance late on, with the striker thwarted again by Mark Flekken as Everton dropped a place to 15th despite their point.

Thomas Frank's Brentford remain 11th, though it is without a win in six home league games.