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Home » Recipes » Oats

S'mores Overnight Oats

Published: Jun 19, 2018 · Modified: Sep 24, 2022 by Lexi

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S'mores Overnight Oats are the decadent summer breakfast you didn't know you needed in your life. (Okay, they might be more qualified as dessert, but who's counting?) They're quick and easy to make and they're gluten free and vegan friendly.

Spoon taking bite out of s'mores overnight oats drizzled with chocolate and marshmallows on a rustic wood board
How delicious do these s'mores overnight oats look!?
Jump to:
  • Why We Love This Recipe
  • Ingredient Notes
  • Step-by-step Instructions
  • Expert Tips and FAQs
  • Related Recipes
  • 📖 Recipe
  • 💬 Reviews

Why We Love This Recipe

  • Quick and easy: These s'mores overnight oats come together in just a few simple steps. All you have to do is mix everything together, and then let them sit in the fridge to thicken up!
  • Delicious: I mean, can you ever go wrong with chocolate, marshmallows and graham crackers?
  • Meal prep friendly: Make a big batch of these s'mores overnight oats and store in small containers in the fridge for easy, on-the-go breakfast all week.
  • Vegan option: You can easily make these vegan by using nondairy milk and vegan marshmallows.

Ingredient Notes

  • Oats: We always use old fashioned whole rolled oats for overnight oats. Unlike quick cooking oats, they give the overnight oats a bit of texture so it's not just a big gloopy mess. They also soak up liquid really well without congealing.
  • Chia seeds: These are technically optional, but they help the overnight oats thicken up and add a bit more nutritional density.
  • Milk: Any nondairy (or even regular) milk would work well here. We typically use oat, almond or cashew milk.
  • Cocoa powder: You can use any variety you'd like in this recipe. Feel free to use sweetened or unsweetened; we usually use the latter to keep the sugar on the lower side.
  • Marshmallows: We prefer using vegan-friendly marshmallows (like these ones), but any mini marshmallows will do!
  • Graham crackers: To crush them yourself, pulse a few whole graham crackers in a small food processor, or use a rolling pin to crush into smaller pieces.

Step-by-step Instructions

  1. In a large mixing bowl, whisk together milk, chia seeds, cocoa powder, vanilla and maple syrup. 
  2. Stir in the oats until well combined.
  3. Cover and let sit in refrigerator for at least 2 hours or up to overnight. 
  4. Before serving, gently fold in the mini marshmallows and crushed graham crackers.
  5. Optional: serve topped with more marshmallows, graham crackers & a drizzle of melted chocolate.

Expert Tips and FAQs

  • For best results, let the oats sit (covered) overnight. If you're in a rush, 2-4 hours in the refrigerator will also do the trick.
  • For ultra creamy overnight oats, we'd recommend using oat or coconut milk. Soy, cashew or almond would all work well too.
  • Storage: We like to store in one big container and just portion out a bowl every morning. If you want to add in toppings, it's better to store these in a small jar or individual-sized storage container. This also makes it much easier to grab on the go!
    • Alternatively, you can divide the s'mores overnight oat mixture between several smaller jars and store individually.
  • Wait to add the graham crackers and marshmallows until just before serving. Otherwise, they will get mushy.
  • If desired, you can make a chocolate layer and a marshmallow layer like we did in these photos, but it's absolutely not necessary! To do so, leave out the cocoa powder. Once you mix everything together, divide the mixture in half and only add cocoa powder to one half. 
Side view of s'mores overnight oats drizzled with chocolate and marshmallows on a rustic wood board
Breakfast or dessert, we're totally on board with these overnight oats.

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    Chocolate Peanut Clusters with Marshmallows and Raspberries

Tried this recipe? Please leave a star ⭐️⭐️⭐️⭐️⭐️ rating below and/or a review in the comments section further down the page. You can also stay in touch with us through social media by following us on Instagram, Pinterest, and Facebook or by subscribing to our newsletter.

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S'mores Overnight Oats


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  • Author: Lexi
  • Total Time: 2 hours 10 minutes
  • Yield: 4 servings 1x
  • Diet: Gluten Free
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Description

S'mores Overnight Oats are the decadent summer breakfast you didn't know you needed in your life. (Okay, they might be more qualified as dessert, but who's counting?) They're quick and easy to make and they're gluten free and vegan friendly. 


Ingredients

Units Scale
  • 2 cups old fashioned whole rolled oats
  • 2 cups nondairy or regular milk (oat, almond, coconut, etc)
  • ¼ cup chia seeds (optional)
  • ¼ cup cocoa powder
  • 1 tsp vanilla extract
  • ¼ cup maple syrup
  • ⅓ cup mini marshmallows + more for topping
  • ¼ cup crushed graham crackers + more for topping
  • Optional: melted chocolate

Instructions

  1. In a large mixing bowl, whisk together milk, chia seeds, cocoa powder, vanilla and maple syrup. 
  2. Stir in the oats until well combined.
  3. Cover and let sit in refrigerator for at least 2 hours or up to overnight. 
  4. Before serving, gently fold in the mini marshmallows and crushed graham crackers.
  5. Optional: serve topped with more marshmallows, graham crackers & a drizzle of melted chocolate.

Notes

*If desired, you can make a chocolate layer and a marshmallow layer like we did in these photos, but it's absolutely not necessary! To do so, leave out the cocoa powder. Once you mix everything together, divide the mixture in half and only add cocoa powder to one half. 

For best results, let the oats sit (covered) overnight. If you're in a rush, 2-4 hours in the refrigerator will also do the trick.

For ultra creamy overnight oats, we'd recommend using oat or coconut milk. Soy, cashew or almond would all work well too.

Storage: We like to store in one big container and just portion out a bowl every morning. If you want to add in toppings, it's better to store these in a small jar or individual-sized storage container. This also makes it much easier to grab on the go!

Wait to add the graham crackers and marshmallows until just before serving. Otherwise, they will get mushy. 

  • Prep Time: 10 minutes
  • Cook Time: 2 hours
  • Category: Breakfast
  • Method: No Cook
  • Cuisine: American

Nutrition

  • Serving Size: 1 small jar
  • Calories: 371
  • Sugar: 19.5 g
  • Sodium: 71.6 mg
  • Fat: 7.6 g
  • Carbohydrates: 64.2 g
  • Fiber: 11.8 g
  • Protein: 10 g

Keywords: S'mores overnight oats

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Hi, we're Lexi and Beth, a mother-daughter team from Michigan. The recipes you'll find here are a reflection of how we bring our family together around the dinner table despite various dietary differences.

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Spoon taking bite out of s'mores overnight oats drizzled with chocolate and marshmallows on a rustic wood board