Lacazette opened the scoring with a superb finish shortly after half-time, and Aubameyang added one of his own minutes later as the Gunners made it four wins in a row in the Premier League.
There had been questions about whether the pair would be able to play together for the north London side, but they have impressed in recent games.
And the Gabon international has insisted that he has been enjoying lining up with his new team-mate for the Gunners in recent weeks.
Speaking to Sky Sports after Sunday’s victory, Aubameyang said of his partnership with Lacazette: “We are close off the pitch, we go for dinner – not every night!
“We have had a good relationship since day one and enjoy playing together.”
On Arsenal’s progress under new boss Unai Emery, he added: “I think we are improving every day and feeling good and better, so when we win it is better for the team.
“It is going well and we are enjoying training at the training ground.”
Arsenal’s win lifted them up into sixth place in the Premier League table and left them with 12 points from their first six games in the top flight under Emery.
The north London side will next be in action on Wednesday night when they welcome Brentford to The Emirates in the third round of the League Cup.
Arsenal have not won the Premier League title since their famous unbeaten triumph in the 2003-04 campaign.
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