Princess Diana’s overnight oats, also known as Bircher muesli, are made with citrus-soaked oats, Greek yogurt, grated apple, blueberries, and walnuts. It’s a nourishing, protein-packed breakfast that’s easy to prep ahead.
Who knew Princess Diana was enjoying overnight oats long before they became trendy? Her former private chef recently shared that she loved starting her mornings with this refreshing, fruit-filled version, also called Bircher muesli. And since you all know I’m a huge overnight oats fan, I had to try it for myself!
Why I Love These Overnight Oats
I’m always looking for breakfasts that feel a little special but are still practical for busy mornings, and this recipe totally nails it. Princess Diana’s overnight oats are nourishing, fresh, and surprisingly high in protein. Plus they come with a backstory that makes breakfast feel a little more special. Here’s why I know you’ll love them:
- High-protein: About 20 grams per serving so you’ll actually stay full until lunch.
- Bright & refreshing: Citrus-soaked oats with a touch of lemon.
- Great texture: Creamy yogurt, juicy blueberries, grated apple, and crunchy walnuts.
- Meal prep friendly: Quick to prep ahead so mornings feel effortless.
Ingredients Needed
- rolled oats: old-fashioned oats soak up the citrus juice without turning mushy, making them perfect for overnight oats.
- orange juice: Princess Diana’s former chef used freshly squeezed orange juice, but I opted for store-bought orange juice out of convenience. Either option works great!
- greek yogurt: creates a creamy base and adds about 20 grams of protein per serving. I like using a thick brand like Fage or Chobani for the best texture. Use a dairy-free yogurt if you need this recipe to be dairy-free.
- honey or maple syrup: balances the tang of the citrus and yogurt with natural sweetness.
- lemon juice: prevents the apple from browning while adding some brightness.
- cinnamon: adds warmth and depth without extra sugar.
- apple: grated right into the oats for natural sweetness, fiber, and texture.
- blueberries: fresh and juicy, they bring color, antioxidants, and a burst of flavor.
- walnuts: chopped and toasted for crunch, healthy fats, and omega-3s. Use any nut of choice or skip for a nut-free version.
How to Store
These overnight oats are perfect for meal prep because they stay fresh for several days.
- Refrigerator: Store in an airtight container or individual jars for 3–4 days. The flavors get even better as they sit, but the oats will continue to soften over time.
- Mix-ins later: For crunchier walnuts or fresher blueberries, keep them separate and add right before serving.
- Freezer: Overnight oats don’t freeze well, so stick to fridge storage only.
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