The European Championship runners-up sat in first place after the short program 24 hours earlier and that was the same place they occupied after Sunday's free skate.
This meant the duo ended with a score of 192.02 to collect their first Grand Prix title in style, finishing almost 12 points ahead of their nearest rivals.
Bazarova and Larionov have finished second on four occasion in senior Grand Prix events since 2010 but finally broke their duck, much to Bazarova's delight.
"We are full of emotions because this is the first time that we won a Grand Prix," said 19-year-old Bazarova, who qualified for the Grand Prix Final to be held at the 2014 Olympic venue in Sochi.
"We made a few minor errors on the jumps and that's something we will work on."
Kirsten Moore-Towers and Dylan Moscovitch of Canada finished second with 180.63 points to also qualify for the final in Russia, while Americans Marissa Castelli and Simon Shnapir were third with 174.51.