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Vanilla Mint Overnight Oatmeal Smoothie

  • Author: Amanda @ Running with Spoons
  • Total Time: 3 hours 5 mins
  • Yield: 1 serving 1x


  • 1/2 cup (40 g) rolled oats**
  • 3/4 cup (180 ml) unsweetened vanilla almond milk
  • 1/2 tsp vanilla extract
  • pinch of salt (optional, but recommended)
  • 1/2 cup (1520 g) baby spinach***
  • 1 medium-size (100 g) ripe banana, frozen
  • 2 Tbsp (25 g) avocado (optional)
  • a few drops of mint extract****
  • 1/21 Tbsp (715 ml) sweetener, to taste (optional)


  1. The night before, add the oats, almond milk, and vanilla to the bowl of your blender and give it a stir to ensure that everything is well combined. Cover and place in the fridge for at least 3 hours, preferably overnight.
  2. The next morning, remove your blender bowl from the fridge and add the spinach, frozen banana, and avocado (if using). Blend on high until a smooth and creamy consistency is reached, adding more milk if the smoothie is too thick for your liking. Add a few drops of mint and blend for a couple more seconds. Take a small sip and add extra mint and/or sweetener, if desired.
  3. Transfer it to a bowl or glass, add desired toppings, and enjoy!


* Cook time refers to chilling time. ** Be sure to use certified gluten-free oats if you need this to be gluten-free. You can also reduce the oats to 1/4 cup (20 g) and add a scoop of your favourite protein powder. *** Feel free to sub the spinach out for another leafy green. I like using baby spinach because of it’s mild taste. **** Start with a few drops of of mint and gradually add more to taste. Mint can get overpowering super fast, so always err on the side of caution.

  • Prep Time: 5 mins
  • Cook Time: 3 hours

Keywords: breakfast, gluten-free, green smoothie, healthy, healthy shamrock shake, mint, overnight oatmeal smoothie, recipe, shamrock shake, snack, vanilla, vegan