The singer explained that moving out and looking after herself has translated into the writing of her new material.
"Standing on my own two feet is inspiring new lyrics for the album, due out early next year," she told the Daily Star.
"I'm making the transition from being a girl into womanhood and finding out what my responsibilities are.
"It's the first time I've lived in the real world with bills to pay, and that's coming across in what I'm writing."
Talking about living on her own, she added: "I love being at home now, improving my cooking.
"I've got a really bad memory, so my first attempts were a disaster - I'd forget what ingredients to put in.
"But I do a lasagne that's a crowd-pleaser, and a good lemon drizzle cake, which I take to my mum's for the Sunday roast to fatten the family up."
Katy B said earlier this year that fans should expect less dubstep on her second record.
Watch the video for Katy B's 'Easy Please Me' below: