The unseeded duo, who won the Irish Open in November, did not drop a game during the blistering run to the final in France.
And they maintained that form in the gold medal match, beating world number 21 outfit and top seeds Adam Cwalina and Przemyslaw Wacha of Poland 21-12, 21-18.
They took just 33 minutes to wrap up the win and afterwards Towler tweeted: "It was a great performance and a really pleasing win."
Inclusion of new Paralympic sports hailed as 'game-changing' by GB Taekwondo CEO Archibald
Their win made up for earlier disappointment for England after second seeds Heather Olver and Lauren Smith lost to Gabriela and Stefani Stoeva of Bulgaria 22-20, 16-21, 21-9 in the women's doubles final.
© Sportsbeat 2015
'Joy overwhelming' - Wild, emotional celebrations as Indonesian underdogs make badminton history
'What a sensational victory!' - Indonesia pair celebrate wildly after badminton gold