The actress – who plays Fiz in the soap – was joined by partner Chris Farr as they launched the initiative on Tuesday morning (10 February).
Annies now offers coffees, pastries, cakes and sandwiches for takeaway.
Jennie – who gave birth to son Albert in December – opened her cosy, classic British restaurant back in 2012 and it's gone from strength to strength ever since.
The eatery won the People's Choice Award for 'Best Tea Room' at the Manchester Tourism Awards last year.
Jennie previously told Reveal: "We've always talked about doing something together. Chris is the restaurateur, so he's been doing this for years. It's a real family thing, with his family and my family involved. For a long time we looked for the right venue and then when we found that, it all fell into place.
"We want it to be somewhere that people can feel like the menu reflects the homeliness of the decor and the name.
"It's a place where people can feel at home, but they don't have to do the washing up!"
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