Voting is still open on Roberts' Instagram story until 7pm - so there's still time to vote for your favourite before the winner is announced.
When level 4 lockdown hit, Roberts decided to get his followers to submit their favourite choc bar of choice through his personal Instagram to find the ultimate flavour.
There were only two rules: the chocolate bar had to be widely available in NZ, and no block chocolates allowed - bars only.
"I have around 20,000 people a day tuning in to participate, which is absolutely bizarre to me, but I love that this is how we are spending our level 4 lockdown," he told the Herald.
Over 400,000 votes have been cast over the past few days.
The final battle for the ultimate chocolate bar started last night at 7pm, running for 24 hours - so there's still time to vote for your favourite today.
"Personally I wanted Peanut Slab to win, but was careful to keep that opinion to myself until it was eliminated in the quarter-finals, so as not to be seen to be influencing the voting," Roberts said.
It's not the first time Roberts has run a competition like this. During last year's level 4 lockdown he ran the Great New Zealand Chippie Off, with salt and vinegar taking out the title, and the Great New Zealand Bikkie Off, with Squiggles voted the winner.
"It seemed timely to bring it back."