Peanut & Butternut Squash Overnight Oats & How to Use Your Empty Peanut Butter Jar!

Don’t you hate it when you’ve almost finish your jar of peanut butter and you just can’t get the last little bit out?

I do, that’s why I always make overnight oats in my peanut jar.

empty peanut butter jar

How to make overnight oats

To make the overnight oats all you have to do is add oats, milk and any protein powder or flavourings you would like to your almost empty peanut butter jar and leave it in the fridge overnight. The oats will expand and then when you stir it in the morning they will help to wipe the peanut butter from the side. This means no more wasted peanut butter – yay! Also you can use this trick with any kind of nut butter.

Overnight oats super quick and easy. They’re great for if you don’t have much time in the morning.

Today I want to share with you a super special recipe for peanut and butternut squash overnight oats. I made it a while ago and put the recipe on my instagram but it deserves a blog post of its own because it was so yummy and I love sharing ways to add vegetables to your breakfast. So far I have shared breakfast recipes using courgette, carrot, cauliflower, beetroot and radish! But never butternut squash!

Adding butternut squash to your overnight oats helps to make them nice and sweet. It also adds vitamins such as A and C to support your immune system – very important as we approach winter.

peanut butter oatmeal



Serves 1
(3 of your 5-a-day)

  • 1 cup hazelnut milk*
  • ½ cup oats
  • ½ – ¾ cup roasted butternut squash
  • 1 tbsp maple syrup
  • 2 heaped tsp chia seeds
  • 1-2 tbsp leftover peanut butter in your jar
  •  Toppings – ½ cup strawberries, 1 banana (and perhaps a homemade peanut butter cup).


  1. Roast the butternut squash until it becomes caramelised (about 30-40 minutes at 180°C). Then mash it with a fork.
  2. Add all of the ingredients to the peanut butter jar and mix well.
  3. Leave the jar overnight in the fridge so that the mixture will thicken.
  4. In the morning you can transfer the oats to a bowl and add the banana and strawberries to the top. Or you can grab the jar and eat it on the go.

*I have made the recipe using Rude Health hazelnut milk and rice milk and hazelnut was by far the best! It’s worth trying to find some and spending the extra money on it.

overnight oats with peanut butter and butternut squash healthyandpsyched


There are lots of other things you can do with an empty peanut butter jar. Clean the jar then use it to…

  • Store super food powders
  • Store pens
  • Store just about anything that fits in it to be honest- buttons, money you name it
  • Mix salad dressings  or protein shakes!
  • Hold candles
  • Make a maraca


What’s the wackiest way that you’ve used an old jar?


  1. September 14, 2016 / 3:27 pm

    This is such a great idea I can’t believe I’ve never thought about it! Usually I just use a spoon and try my best to scrape out the remaining peanut butter before washing the jar for future use. Also how do you get butternut squash? I can’t seem to find it in supermarkets here..

    • Heathy & Psyched
      September 14, 2016 / 3:32 pm

      Yay- I’m so glad that I’ve introduced this idea to someone 🙂 It’s more satisfying knowing that you’ve gotten every last little bit out. I think it would work with most of your overnight oat recipes 🙂

      Actually I did have a hard time finding butternut squash when I was in Singapore. I think I got some from the Mustafa Center but it was really expensive. You could try with Japanese Pumpkin (which might be a little bit less sweet) or sweet potato.

  2. September 14, 2016 / 7:36 pm

    Wow such a nice twist on the overnight oats !! I will have to try it when my peanut butter jar is empty, ah !

    • Heathy & Psyched
      September 15, 2016 / 7:20 am

      Thanks Erika. It would be really good with almond butter as well 🙂

  3. September 15, 2016 / 9:26 am

    I often soak my porridge oats in water overnight and then cook them in the morning, either with more water or some milk. It saves on milk! The result is a softer textured cereal. A twist on this is to cook a mix of overnight oats and ‘normal’ oats together for a contrast in textures.

    • Heathy & Psyched
      September 15, 2016 / 10:56 am

      Ah that’s so interesting. Sometimes I soak my oats in water overnight as well, it’s amazing how the oats kind of make their own milk. I haven’t thought to mix in normal oats for texture though. Sounds like it would be really nice.

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