The producer and DJ looked like he had a delectable time as he created some Mau5-inspired concoctions on Thursday and posted pictures of them to social media.
Both Tim Hortons and Deadmau5's label, Universal Music Canada, also shared images of his creations.
This isn't the first time Tim Hortons and Deadmau5 have teamed up. Last spring, he asked the company to make a "Mau5head" doughnut. And they obliged.
Tim Hortons also benefitted from some cross-promotion on the DJ's "Coffee Run" video series, in which he grabs java from one of its restaurants with a celebrity in tow.
Stars he has taken on coffee runs include former Toronto mayor Rob Ford, singer Pharrell Williams and fellow producer Dillon Francis.
Deadmau5 and Tim Hortons' relationship doesn't have any paid sponsorship attached to it, Marketing Mag reported.
To that, Deadmau5 tweeted the following:
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