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Blueberry Overnight Oatmeal

Start your day with these blueberry overnight oats! They're vibrant, refreshing, and infused with sweet blueberries. Gluten-free, Vegan.
Course Breakfast
Cuisine American
Diet Vegan
Method No-Bake
Prep Time 15 minutes
Total Time 15 minutes
Servings 3 servings
Calories 357kcal
Author Caitlin Shoemaker


  • 3/4 cup frozen blueberries (no need to thaw)
  • 2 cups creamy non-dairy milk* (store-bought or homemade)
  • 1 tablespoon grade A maple syrup plus more to taste
  • 1 teaspoon vanilla extract
  • Juice of 1/2 small lemon
  • 1/4 teaspoon kosher salt
  • 2 cups rolled oats gluten-free if necessary
  • 2 tablespoons chia seeds or ground flaxseed
  • Optional add-ins: 1/4 teaspoon cinnamon and/or cardamom
  • Topping suggestions: extra fresh or frozen blueberries pumpkin seeds, hemp hearts, nut butter, etc.


  • Make the Blueberry “Milk”: Add the blueberries to a high-speed blender along with the milk, maple syrup, vanilla, lemon juice, and salt. Blend on high for 45 to 60 seconds, until the blueberries are finely blended into the milk.
  • Mix: Add the oats and chia seeds to a large bowl and mix well. Pour the blueberry milk into the bowl, then stir until everything is combined. Let sit for at least 5 minutes, to allow the oats and chia seeds to absorb some of the liquid. Then, mix again to incorporate the extra liquid sitting on top.
  • Store & Serve: Transfer the oatmeal to jars or other containers, then store in the fridge for at least 4 hours, preferably overnight. Top as desired and enjoy cold or warm; leftovers will keep in the fridge for up to 5 days.


  • Non-dairy Milk: I recommend using a thick and creamy milk, like cashew milk or oat milk – it adds to the creaminess!
  • Blueberries: Fresh blueberries do not create a vibrant purple color when blended, so I recommend using frozen blueberries for the “milk.” However, feel free to fold in or top the oatmeal with extra fresh blueberries if you’d like!
  • Stovetop Instructions: If you’d like to make this on the stovetop, add an additional 2 cups of water to the blueberry “milk”. Cook the milk, oats, blueberries, and chia seeds on the stovetop over medium heat for 5-10 minutes, stirring occasionally. Serve warm.


Calories: 357kcal | Carbohydrates: 55g | Protein: 13g | Fat: 9g | Saturated Fat: 1g | Polyunsaturated Fat: 5g | Monounsaturated Fat: 2g | Trans Fat: 0.01g | Sodium: 278mg | Potassium: 495mg | Fiber: 10g | Sugar: 12g | Vitamin A: 643IU | Vitamin C: 15mg | Calcium: 309mg | Iron: 4mg