Donatella Arpaiais always ready to feed an army — maybe a littletooready according to her husband, Allan Stewart.

“He teases me like, ‘Why are you always cooking as if another eight people are showing up?’ ” the Food Network star tells PEOPLE for this week’s issue. “I don’t know how to cook for a small amount of people.”

But soon, that will be less of a problem. At age 46, Arpaia, who shares 6½-year-old son Alessandro with Stewart, is pregnant with twins, due this fall — the result of a difficult journey toward expanding their family.

After many failed rounds of in vitro fertilization, the couple, who split their time between their lake house in New Fairfield, Connecticut, and Miami, where Stewart works, were about to stop trying and consider adoption.

“IVF is like a roller-coaster ride. It’s not fun because of hormones, weight gain, and it’s just a very painful process,” she says. “You get close and then it’s destroyed.”

Randy Harris

Donatella-Arpaia

But then Alessandro woke his parents up one night to share a dream he’d just had. “He said, ‘God told me that you’re going to have two babies — not one, but two babies,’ ” recalls Stewart, 49, the chief of cardiac surgery atMiami Cardiac & Vascular Institute, who has two children from a previous marriage. ” ‘They’re going to be a boy and a girl and their names are going to be Noah and Emma.’ ”

“At the doctor, when we first saw the heartbeat, I was like, ‘Oh my God,’ and all of a sudden he just moved it to the left and there’s another one,” she says. “I was in disbelief.”

Randy Harris; Food Stylist: Roscoe Betsill

People/Donatella Arpaia at her home.24 Sunset Drive. New Fairfield, CT 06812

Donatella Arpaia and family

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“I didn’t think it was possible, even as it was happening,” adds Arpaia who, along with serving as a judge onIron Chef America, runsProva Pizzabarin New York City. “Now that I’m getting bigger, it feels more real.”

Her advice to other women struggling to add seats to their own dinner tables: Don’t give up. “I encourage my friends in their 30s to get their eggs frozen. There are so many options today — be open to exploring them,” she says.

“If you want it, nothing should stop you from having a family,” adds Arpaia. “It’s the best thing I’ve ever done.”

For more on Donatella Arpaia and to get her grilled garlic-and-herb skirt-steak recipe, pick up the latest issue ofPEOPLE, on newsstands now.

source: people.com