green goddess overnight oats

Simple overnight oats are dressed up for St. Patrick’s Day with bright green spirulina swirled through out. They’re every bit as delicious as they are green – and they’re really really green!

Green Goddess Overnight Oats //

Top o’ the morning to you! It’s cliché, but I’m here today with, yes, something green.

I realized long ago that I’m ok with being weird. And that I’d rather do / say / eat what I want than not do / say / eat those things just to fit in. Or, as a vegetaraian, it’s just as often *not* eating the thing in question that raises eyebrows, but whatever. A fair number of eyebrows have been raised over some of the food I’ve schlepped into the office, and our receptionist pretty much always wants to peek into my lunch box.

I do believe my colleagues have become acclimated to my quirky habits, however, because when I turned up with a glass jar of green goop for breakfast, no one so much as blinked an eye.

Green Goddess Overnight Oats //

The green goop, *this* green goop, is a simple and nutritious breakfast or snack. It’s little more than a standard overnight oats recipe, following the usual formula of one part oats to two parts liquid (unsweetened almond milk, in this case), one part fruit (mashed banana), and a little something for flavour stirred through (a touch of vanilla extract and a pinch of salt).

The vibrant green colour comes from stirring in a small amount of spirulina powder. Not familiar with spirulina? It’s a type of blue-green algae grown on very alkaline (ph 8.5+) water sources. It is widely available at health food stores, and is commonly found as chewable tablets, powder, flakes, pills, or capsules. Spirulina has a unique flavour that has notes of, chocolate, vanilla, and seaweed. You can take spirulina by blending it into smoothies, stirring it into water or juice, or overnight oats. I’ve even had raw chocolate with spirulina added in.

Green Goddess Overnight Oats //

The distinctive flavour of spirulina blends well into these oats. It’s certainly there, but it isn’t overwhelming. I don’t like the way the stuff smells in the bag, but I don’t mind it at all in this quick and easy breakfast. If you’re new to spirulina start with just a half teaspoon or so – a little goes a long way. I’ve used a full teaspoon in the oats pictured here, and some people like to take up to a tablespoon, but I pretty much stop here.

Serve your oats with something nice and green, like chopped kiwi fruit and a sprinkle of hemp seets. It’s the perfect breakfast for St. Patrick’s Day, but really, for any day at all. Enjoy!

Green Goddess Overnight Oats //

One year ago: Fudgy Adzuki Bean Brownies
Two years ago: Cauliflower and Pea Soup with Mint and Lemon
Three years ago: Chocolate Raspberry Torte

Green Goddess Overnight Oats //
5 from 2 votes

green goddess overnight oats

Simple overnight oats are dressed up for St. Patrick's Day with bright green spirulina swirled through out. They're every bit as delicious as they are green - and they're really really green!
Course Breakfast, vegan
Prep Time 5 minutes
Total Time 5 minutes
Servings 1
Author Katie Trant


  • 1/2 a ripe banana mashed
  • 1/3 cup rolled oats
  • 2/3 cup unsweetened almond milk or other milk of choice
  • 1/2 tsp vanilla extract
  • 1/2 - 1 tsp spirulina powder
  • pinch of salt
  • chopped kiwi fruit and hemp seeds for serving


  1. Mash the banana, and place it into a glass jar.
  2. Add the oats, almond milk, vanilla, spirulina, and a pinch of salt. Stir to combine, or, place a lid on the jar and shake well.
  3. Let the oats soak overnight in the fridge, or for at least 4 hours.
  4. When you're ready to eat, top with chipped kiwi and a sprinkle of hemp seeds to make things extra green.




  1. Harriet Emily says

    Yum! I looove overnight oats – and I think the vibrant green colour looks beautiful! This is definitely my kind of recipe, so thank you for creating it – I can’t wait to try it! 🙂

  2. Katie @ Mom to Mom Nutrition says

    I love this take on overnight oats! And anything green goddess is a winner in my book 🙂 nice work!

  3. genevieve @ gratitude & greens says

    Katie, I’m all about green goop! Overnight oats are so easy and tasty- I can’t wait to try your green version!

  4. Linda @ Veganosity says

    I don’t think that it’s weird to be different. I think it’s weird NOT to be. 🙂 This is such a beautiful color. I have some blue green algae in my freezer that I bought from Whole Foods and when I opened it it smelled life fish, so I closed it and have yet to get the courage up to try it in my smoothies or any food. I wonder if spiralina is different? I’m posting an overnight recipe tomorrow. As soon as I finish eating those I’m going to try yours.

    • Katie Trant says

      Spirulina is one type of blue-green algae, but there are others, so I can’t say with any authority that’s what you’ve got in your freezer! Mine doesn’t smell like fish, but it is a pretty intense smell. It’s great in smoothies or in these oats, though!


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