Overnight oats are always a reason to celebrate but make them extra special with a dash of rainbow sprinkles. These birthday cake overnight oats are just the treat. Wake up to an easy and delicious breakfast that's ready to eat.

I love this cake batter overnight oats recipe so much! While it doesn't have actual cake batter inside, it does taste like it!
Made to be creamy, sweet, flavorful, and fun, this birthday cake overnight oats recipe is unique and awesome.
For more overnight oats recipes, check out my Oreo Overnight Oats, Peanut Butter Banana Overnight Oats, Chunky Monkey Overnight Oats, and Strawberries and Cream Overnight Oats.
Why This Recipe Works
- Healthy and affordable. This overnight oats birthday cake recipe is actually very healthy, especially when compared to other breakfast favorites like sugary cereal. Made for less than $1 per serving, this recipe is a great way to eat healthily and remain on budget.
- Convenience. You can make overnight oats up to a few days in advance, so go ahead and prep some food for the week and enjoy! Wake up and eat them old or microwave them for warmth. I love cold oats in summer. There's nothing more convenient than waking up to breakfast already made and ready to eat. Just grab a spoon and serve it up!
- Your favorite flavor in every bite. We love birthday cake and foods that are flavored like birthday cake (like our Birthday Cake Stuffed Cookies) are almost addictingly good. If you love birthday cake, you already know your oats are going to taste incredible!
Jump to:
🥘 Ingredients
Old fashioned oats- This is the base of the recipe. These oats will soak up liquid overnight to soften without the need to cook them.
Milk- Use dairy milk or nondairy milk based on what your preferences are.
Greek yogurt- Adding Greek yogurt will make the oatmeal thicker, creamier, and a bit healthier too.
Maple syrup- Use maple syrup as a natural sweetener. Honey could be used instead.
Vanilla extract- This is a great flavor enhancer.
Almond extract- Adding in a little almond extract is what gives these oats that iconic "birthday cake" flavor that we're looking for.
Chia seeds- This is optional, but adding chia seeds will help to get your oatmeal some more nutritional benefits.
Salt- A natural flavor enhancer.
Rainbow sprinkles- I like to use rainbow Jimmie sprinkles because they don't dissolve as much as other sprinkles, but you can use any sprinkles. Confetti sprinkles would be good here too.
For specific quantities, see the recipe card below.
🍽 Equipment Needed
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🔪 Instructions
Check out how to make Birthday Cake Overnight Oats with these simple step-by-step instructions:
In a bowl, whisk together milk, yogurt, vanilla extract, almond extract, and maple syrup until mixed.
Whisk in chia seeds and salt if using.
Add in the oats.
Stir together until combined.
Add in the rainbow sprinkles.
Stir together until well mixed.
Divide the mixture into 2 8-ounce containers with fitted lids.
Let rest for 6 or more hours (overnight is best but you can do up to 5 days if meal prepping).
In the morning, adjust the consistency by adding in more milk until thinned to your liking, or enjoy it thick as-is. Top with any toppings of choice and enjoy!
🧾 Substitutions
Oats. I have had great success using old fashioned oats and steel cut oats as well as quick cook steel cut oats (the kind that are chopped into smaller pieces). The difference in texture is pretty minimal.
Milk. You can use whole milk, low fat milk, almond milk, coconut milk or any other milk of choice. Even water or coffee creamer can work well in a pinch. Unsweetened almond milk is our favorite.
Sweetener. Healthier sweetener options include honey and maple syrup but you can also choose to use agave or a low-carb liquid sugar substitute.
Yogurt. You can use any plain or flavored yogurt of choice. Our go-to is Greek Yogurt because it's healthier but regular yogurts can be used too. We really enjoy Honey flavored Greek yogurt (it's our favorite). You can also omit the yogurt and just add in another ¼ cup of milk.
🍴 Recipe Tips
Adding chia seeds is optional but can be a great way to get additional health benefits from your meal. They help to reduce your blood pressure and reduce your risk of heart disease.
Chia seeds will absorb some of the liquid in the oats so in the morning they will be pretty thick. You can thin down your oats to your desired consistency by stirring in additional milk.
⏲️ Make Ahead Instructions
You can eat your oats right after they've been mixed together but the oats will be chewy. Letting them sit for at least 4 to 6 hours is ideal for a better texture and consistency as it will take several hours for the oats to absorb the liquid in the oats.
👩🏻🍳 Storage
Your overnight oats are good for 5 days in the fridge so if desired, you can meal prep for the week on Sunday and not have to worry about breakfast again until Saturday.
💭 FAQs
Yes, they can easily be included as a healthy part of your diet. With low calories, high protein, calcium, and fiber content, overnight oats can be filling and perfect for curbing cravings and staying fuller longer.
They are meant to be enjoyed cold, but you don't have to eat them that way. You can easily warm up your oats in the microwave for a warm oatmeal breakfast.
Overnight oats are made with uncooked oats, so the oats actually retain more nutritional benefits.
More great breakfast recipes to check out soon
- Canned Breakfast Potatoes Recipe
- Chocolate Chip Muffins
- 25 Christmas Breakfast Ideas
- 20 Bread Pudding Recipes
📖 Recipe
Birthday Cake Overnight Oats
Ingredients
- 1 ½ cup Old fashioned rolled oats ($0.27)
- ½ cup Milk ($0.10)
- 1 cup Greek yogurt ($0.92)
- 2-4 Tablespoons Maple syrup or honey ($0.08)
- 1 teaspoon Chia seeds *optional ($0.04)
- 1 teaspoon Vanilla extract ($0.02)
- ¼ teaspoon Almond extract ($0.01)
- ¼ teaspoon Salt ($0.02)
- 2-3 Tablespoons Rainbow Sprinkles ($0.21)
Instructions
- In a bowl, whisk together milk, yogurt, vanilla extract, almond extract, and maple syrup until mixed.
- Whisk in chia seeds and salt if using.
- Add in the oats.
- Stir together until combined.
- Add in the rainbow sprinkles.
- Stir together until well mixed.
- Divide the mixture into 2 8-ounce containers with fitted lids.
- Let rest for 6 or more hours (overnight is best but you can do up to 5 days if meal prepping).
- In the morning, adjust the consistency by adding in more milk until thinned to your liking, or enjoy it thick as-is. Top with any toppings of choice and enjoy!
Notes
Substitutions
- Oats. I have had great success using old fashioned oats and steel cut oats as well as quick cook steel cut oats (the kind that are chopped into smaller pieces). The difference in texture is pretty minimal.
- Milk. You can use whole milk, low fat milk, almond milk, coconut milk or any other milk of choice. Even water or coffee creamer can work well in a pinch. Unsweetened almond milk is our favorite.
- Sweetener. Healthier sweetener options include honey and maple syrup but you can also choose to use agave or a low-carb liquid sugar substitute.
- Yogurt. You can use any plain or flavored yogurt of choice. Our go-to is Greek Yogurt because it's healthier but regular yogurts can be used too. We really enjoy Honey flavored Greek yogurt (it's our favorite). You can also omit the yogurt and just add in another ¼ cup of milk.
Recipe Tips
- Adding chia seeds is optional but can be a great way to get additional health benefits from your meal. They help to reduce your blood pressure and reduce your risk of heart disease.
- Chia seeds will absorb some of the liquid in the oats so in the morning they will be pretty thick. You can thin down your oats to your desired consistency by stirring in additional milk.
- Your overnight oats are good for 5 days in the fridge so if desired, you can meal prep for the week on Sunday and not have to worry about breakfast again until Saturday.
- You can eat your oats right after they've been mixed together but the oats will be chewy. Letting them sit for at least 4 to 6 hours is ideal for a better texture and consistency as it will take several hours for the oats to absorb the liquid in the oats.
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