Marissa Hermer is cooking up something big!

The Ladies of London star will release her first cookbook, An American Girl in London: 101 Nourishing Recipes for Your Family from a California Expat, next April, PEOPLE reveals exclusively.

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“I’ve been working on this book for awhile now,” she says. “It kept me busy while I was on bedrest and house arrest during my pregnancy.”

Hermer and husband Matt welcomed their third child, a healthy baby girl, in April—but the reality star has been open about her difficult experience while expecting. She was diagnosed with both placenta previa and placenta accreta, causing her to remain on bedrest on and off from the beginning.
“All the cooking I did while I was staying in kept me sane, as cooking is always therapeutic for me,” says the restaurateur. “I really turned to it a lot over the rollercoaster of this pregnancy.”

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Throughout the book, readers can expect “hearty, family-friendly fare with a healthy twist” like her sourdough bread and butter pudding and beef wellington.

“I’m so excited to share all my favorite family recipes in this book!” she says.