In a repeat of the World Cup first stage final where they struggled to clinch the gold, the trio this time did not even drop a set to win their second world title in two months.
Eyeing their first-ever gold medal together, Deepika and husband Atanu Das, who are India's best medal hope in archery in the Olympics, bounced back from a 0-2 deficit to down the Netherland's Sjef van den Berg and Gabriela Schloesser 5-3.
That was the only time India faced some challenge on the final day here as they displayed fine composure to reign supreme.
Deepika blanked 17th ranked Russian Elena Osipova 6-0 to cap a perfect three out of three in the recurve women's section, her fourth individual World Cup gold medal.
The World No 3 had won it in Guatemala City 2021, Salt Lake City 2018 and Antalya 2012. Overall, she has nine gold, 12 silver and seven bronze medals in the World Cup.
"This is the first time I've won all three medals in a World Cup. I'm really happy but at the same time, I've to continue improving as we have some very, very important competitions lined up," Deepika said.
Less than a month from now, the Indian archers will be chasing their elusive Olympic medal dream among the best in the world.
"We do not have any Olympic medal in archery, so it's really important that we keep improving and keep up the show," she said.
In the semi-final, Deepika used all her experience to produce two spectacular opening sets to lead 4-0 against 20-year-old Ana Vazquez of Mexico before sealing a 6-2 win.
Deepika shot 29 each in the first two sets, while an under-pressure Ana faltered with two 8s to concede the match.
In the mixed pair final, fifth-seeded Atanu and Deepika complemented each other well as the latter came into her own after a sluggish start to give themselves a perfect anniversary gift in advance.
"It feels amazing. First time we won the final together, it feels so happy," Atanu said after their win.
The two got married after a two-year courtship and would be celebrating their first wedding anniversary on June 30.
"It feels we are made for each other. But at the ground we are not couple but like just other competitors, we motivate, support and back each other," Atanu said.