There is a recipe reported for what Princess Diana used to enjoy for breakfast — a version of overnight oats / Bircher muesli that her former chef Darren McGrady shared.

Here’s the gist of the recipe, plus some notes to help you try it (and adapt it):

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🥣 “Princess Diana’s Overnight Oats”

Ingredients (for ~2 servings)

• 1 cup rolled oats 
• 1 cup freshly squeezed orange juice (instead of milk)
• 1 cup Greek yogurt 
• 1 Tbsp raw honey (or to taste)
• ¼ tsp cinnamon (optional)
• ½ Honeycrisp apple, grated (skin on)
• Juice of 1 lemon
• 1 cup fresh blueberries
• ½ cup toasted walnuts

Instructions

1. The night before: Put the rolled oats into a bowl (or a lidded jar) and cover with the freshly squeezed orange juice. Stir lightly. Cover and refrigerate overnight so the oats soak.
   
2. In the morning: Stir in the Greek yogurt, the honey (to your taste), and lemon juice.
   
3. Fold in the grated apple and half the blueberries. Spoon into serving bowls. Top with the remaining blueberries and the toasted walnuts.
   
4. Serve and enjoy!

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🔍 Notes & adaptation ideas

• The use of orange juice rather than milk is what sets this apart — giving a bright, fruity note.
  
• Choosing rolled oats (old-fashioned) is better than quick-cooking so you keep a nicer texture.
  
• The toppings — apple, blueberries, walnuts — add crunch, freshness and texture, which elevates an otherwise simple dish.
  
• If you like, you can swap fruits (pear, raspberries, etc) or nuts (almonds, pecans) to vary it.
  
• If you want to make it vegan or lighter, you could use a plant-based yogurt instead of Greek yogurt, but you may lose a bit of that creamy protein boost.
  
• Because you’re using fruit juice, the sweetness will be a bit more natural / lighter than if you soaked in milk + sugar.

Let me know how you life when you try!!!