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    1. Celebrity
    2. Royals

    Princess Diana Was 20 Years Ahead of This Trend and "Stole the Recipe" for Her Healthy Breakfast from a Swiss Health Clinic

    Former palace chef Darren McGrady revealed the secret behind Diana's favorite morning meal.

    Kristin Contino#039;s avatar
    By Kristin Contino
    Published 15 July 2025 In News

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    Princess Diana wearing a Philadelphia Eagles jacket
    (Image credit: Getty Images)
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    From Queen Elizabeth's healthy two-ingredient lunch to Prince Louis's love of beetroot, fans have forever been curious about the Royal Family's eating habits. Former palace chef Darren McGrady—who worked for Princess Diana from 1993 until her 1997 death—often shares tidbits from the royal kitchens, and in a video on his YouTube channel, he showed how to recreate the late princess's surprising favorite breakfast.

    Overnight oats became trendy in the United States around 2012, and these days, you can find a number of prepared versions of the healthy dish if you don't have time to make it yourself. But it turns out that Diana was a fan of the breakfast decades before people were searching Pinterest for their favorite overnight oats recipes.

    "She actually went to a Swiss health clinic, and there she had these overnight oats," McGrady said, noting that they "were actually called bircher muesli, they were invented by a Swiss nutritionist."

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    Princess Diana sitting on a plane eating a piece of cake

    Princess Diana is seen in 1985.

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    "She stole the recipe, came back, and said Darren, I want these for breakfast every day," he said.

    Noting that oats are "rich in fiber," McGrady went on to demonstrate how to make the late royal's favorite meal. Rather than soaking the oats overnight in milk or oat milk, the former chef revealed that he used orange juice instead.

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    In the morning, the former palace chef folded in Greek yogurt—"an incredible protein"—along with raw honey to taste and lemon juice. While he noted that you can dress the oats up however you like, Diana liked Honeycrisp apples, walnuts and blueberries mixed into her oats.

    McGrady admits that when he was making breakfast for Diana, he "used to double the recipe" and eat the delicious overnight oats himself, too.

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    Explore More
    Diana
    Kristin Contino
    Kristin Contino
    Senior Royal and Celebrity Editor

    Kristin Contino is Marie Claire's Senior Royal and Celebrity editor. She's been covering royalty since 2018—including major moments such as the Platinum Jubilee, Queen Elizabeth II’s death and King Charles III's coronation—and places a particular focus on the British Royal Family's style and what it means.

    Prior to working at Marie Claire, she wrote about celebrity and royal fashion at Page Six Style and covered royalty from around the world as chief reporter at Royal Central. Kristin has provided expert commentary for outlets including the BBC, Sky News, US Weekly, the Today Show and many others.

    Kristin is also the published author of two novels, “The Legacy of Us” and “A House Full of Windsor.” She's passionate about travel, history, horses, and learning everything she can about her favorite city in the world, London.

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