The "Blown Away" singer had a little bit of trouble while cooking a meal on Saturday night.
"I set off the fire alarm in my apartment trying to make dinner," she Tweeted. "Oops! Sorry neighbors… #TopChef #Kitchen#Nightmares."
The 30-year-old, who married Canadian hockey player Mike Fisher in 2010, is a vegan and has been working on improving her cooking skills.
"I mean I try," she told Ellen Degeneres last year. "I want to be that mom some day. My mom makes the best fill-in-the-blank. I would love to be that, so I am working on it."