Whether it’s your birthday or your kids just love sprinkles, these Birthday Cake Overnight Oats are a fantastic make-ahead breakfast! Cake Batter Overnight Oats are made with old-fashioned oats, chia seeds, flax seeds, Greek yogurt, maple syrup, and a few other basic ingredients.

Why Birthday Cake Overnight Oats Are SO Good:
- They taste like cake batter! My not-so-secret ingredient is almond extract. A little goes a long way, but it really helps create a cake batter vibe.
- Sprinkles make these overnight oats very kid-friendly. What kid doesn’t love sprinkles?!
- Birthday cake overnight oats are actually quite a nutrient-dense breakfast, with nourishing ingredients like oats, Greek yogurt, nut butter, chia and flax seeds, and more.
- They’re low-maintenance, requiring just a few minutes to mix ingredients then will set overnight in the fridge.
Ingredients You Will Need

- Oats: Use old-fashioned oats, certified gluten-free if that’s a concern. You can use quick oats in overnight oats, but it changes the liquid/ oat ratio and final texture a bit.
- Greek Yogurt: adds protein and makes the cake batter overnight oats extra creamy.
- Chia & Flax Seeds: these seeds add fiber, healthy fats, and helps create the perfect overnight oats consistency.
- Almond or Cashew Butter: Both are delicious options that help make this breakfast more filling and satisfying.
- Almond Milk: Feel free to sub dairy milk, oat milk, soy milk, or whatever you prefer.
- Maple Syrup: adds the perfect sweetness for cake-flavored sweet overnight oats.
- Vanilla Extract: a little dash of flavoring
- Almond Extract: really helps create the best birthday cake and cake batter flavor. If you don’t have almond extract, you can sub a little more vanilla.
- Sprinkles: because they’re obviously of the highest importance when making a birthday cake overnight oats!
Step-by-Step Directions

- Combine all ingredients except sprinkles in a wide-mouthed jar. Stir until all ingredients are fully combined.
- Wait 5 minutes, then stir again (this helps create clumps of seeds from settling). Transfer to a fridge and let set overnight, or at least 4 hours.
- Just prior to serving, stir in the sprinkles. If desired, garnish with a dollop of whipped cream and few extra sprinkles and enjoy.
Expert Tips & Variations
- High-Protein Cake Batter Overnight Oats: Add a scoop of your favorite vanilla or cake batter protein powder to your oats. For an unflavored option, try using unflavored collagen peptides. Learn more about collagen on our sister site’s article: What is Collagen? Benefits & Side Effects.
- Seasonal Holidays: change up the sprinkles based on the occasion – multi-color for birthdays, red and green for Christmas, pink and red for Valentine’s Day, etc. Avoiding artificial food dyes? Try these natural sprinkles!
- Sugar-Free: sub your favorite sugar-free sweetener of choice and use unsweetened Greek yogurt and milk. They also make sugar-free sprinkles you can use, too!

FAQs
My oats are too thick/ thin, what do I do?
Change the texture by changing the amount of liquid. I like my oats on the thicker side as a personal preference, but also because it’s easier to adjust the consistency when they’re starting out thicker. Just add a little extra milk in the morning before eating, if your oats are too thick for your liking!
Do you eat overnight oats warm or cold?
Overnight oats are typically eaten cold, but you can enjoy them warm, too. Heat your overnight oats (remove any metal lids!) for 30-60 seconds, then stir. Continue adding 10-15 seconds at a time, then stirring, until your overnight oats reach your desired temperature.
Are overnight oats safe to eat since you’re not cooking the oats?
Yes. You may hear concern over the phytic acid in oats, as it’s sometimes called an “anti-nutrient,” since phytic acid can slightly inhibit the absorption of some nutrients (iron, zinc, and calcium). But this effect is mostly limited to what you’re eating at that current meal.
Additionally, research has shown us that phytic acid is rarely a concern if you’re eating enough and an overall balanced diet.
Check out more info in this article, “Are Overnight Oats Healthy?” from our sister site, Nutrition to Fit.
Supplies You’ll Need
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- Measuring cups & spoons
- Wide-mouth jars: I typically use wide-mouth 16 ounce mason jars, or like these cute ones, too. You can also use something like these cute glass jars with wood lids that actually have a spoon with it! But basically, any container that can hold around 2 cups and has an airtight lid will work.
More Recipes You’ll Love
Check out some of these similar recipes from Healthyish Eats, as well as our sister sites!
- Chocolate Protein Overnight Oats
- Mango Overnight Oats
- Black Forest Overnight Oats
- Coconut Cream Pie Overnight Oats
- Cookie Dough Overnight Oats
- Apple Pie Overnight Oats
- Turmeric Overnight Oats
HUNGRY FOR MORE? If you tried this recipes, try leaving a star rating in the recipe card below and/ or a review in the comments! I always appreciate feedback (and everyone loves to read what variations worked well if you tried any)! You can also follow me on Pinterest or Instagram, check out my other sites, and sign up for my email list, too!

Birthday Cake Overnight Oats
Ingredients
- 1/2 cup old-fashioned oats
- 1 tablespoon chia seeds
- 1 tablespoon ground flax seeds
- 1/4 cup Greek yogurt plain, nonfat
- 1 tablespoon almond or cashew butter
- 1 tablespoon maple syrup
- 1/4 teaspoon vanilla extract
- 1/4 teaspoon almond extract
- 2/3 cups almond milk unsweetened
- 2 tablespoons sprinkles
Instructions
- Combine all ingredients except sprinkles in a wide-mouthed jar. Stir until all ingredients are fully combined.
- Wait 5 minutes, then stir again (this helps create clumps of seeds from settling). Transfer to a fridge and let set overnight, or at least 4 hours.
- Just prior to serving, stir in the sprinkles. If desired, garnish with a dollop of whipped cream and few extra sprinkles and enjoy.
Notes
- You can use whatever milk you prefer.
- If you don’t have almond extract, substitute more vanilla extract.
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