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.

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I love this cake batter overnight oats recipe so much! While it doesn't have actual cake batter inside, it tastes like it does! Made to be creamy, sweet, flavorful, and fun, this birthday cake overnight oats recipe is unique and awesome.
We love making overnight oat recipes fun and flavorful like with our Oreo Overnight Oats and Chunky Monkey Overnight Oats. With breakfast options like these waking up should be no problem at all. Of course, it also helps to have a large glass of Caramel Iced Coffee too.
For more overnight oats recipes, check out my Peanut Butter Banana Overnight Oats, and Strawberries and Cream Overnight Oats.
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💛 Why You'll Love This Recipe
- Yummy and affordable. This overnight oats birthday cake recipe is actually pretty good for you, 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 well and remain on budget. Perfect for when you want to Cut Your Grocery Bill and Still Eat Healthy.
- 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 cold 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!
🛒 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. You could use quick cook oats if you want an even softer texture (I often do).
Almond extract- Adding in a little almond extract is what gives these oats that iconic "birthday cake" flavor that we're looking for.
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.
See the recipe card below for full ingredients and instructions.
🔀 Substitutions & Variations
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. If you're looking for more reasons to add oats to your diet, try this Meatloaf Recipe with Oatmeal, it's perfect for dinner.
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. Non refined 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 has more protein than regular yogurt, 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.
💰 Budget-Friendly Tips
Use store-brand ingredients: Store-brand oats, milk, yogurt, and sprinkles taste the same but cost far less.
Buy yogurt in tubs, not cups: Large containers of Greek yogurt are significantly cheaper per ounce than single-serve portions.
Skip the almond extract: It adds flavor but is one of the most expensive ingredients. Vanilla alone still gives a great birthday-cake taste.
Stretch the recipe: Add an extra ¼ cup of milk to increase the volume and make two larger servings without much added cost.
🥄 Instructions for Birthday Cake Overnight Oats

Step 1: In a bowl, whisk together milk, yogurt, vanilla extract, almond extract, and maple syrup until mixed.

Step 2: Whisk in chia seeds and salt if using.

Step 3: Add in the oats.

Step 4: Stir together until combined.

Step 5: Add in the rainbow sprinkles.

Step 6: Stir together until well mixed.
Step 7: Divide the mixture into 2 8-ounce containers with fitted lids.
Step 8: Let rest for 6 or more hours (overnight is best but you can do up to 5 days if meal prepping).
Step 9: 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!

👩🏻🍳 Expert Tips
Optional: Adding chia seeds is optional but can be a great way to get additional benefits from your meal.
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.
❄️ Storage and Make Ahead
Storage: Store overnight oats in airtight containers in the refrigerator for up to 5 days. This makes them perfect for meal prepping-prepare a few jars on Sunday, and breakfast is ready all week long.
Make Ahead: You can enjoy your oats right after mixing, but the texture will be chewy. For the best consistency, let them sit for 4-6 hours (or overnight) to allow the oats to fully absorb the liquid.
🥗 Side Dishes or Pairing Ideas
Pair birthday overnight oats with a side of fresh fruit or a handful of nuts for added texture and nutrition. They also go great with scrambled eggs, yogurt, or a breakfast smoothie for a balanced meal. For a fun treat, top with whipped cream, sprinkles, or a drizzle of chocolate syrup before serving.
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❓ Recipe FAQs
Yes, they can be included as a 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 nutrition.

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🐝 If you tried this birthday cake overnight oats, please leave a ⭐️ star rating and share your buzz in the 💬 comments below. I'd truly appreciate it!
📖 Recipe
Birthday Cake Overnight Oats
Ingredients
- ½ cup milk - ($0.10)
- 1 cup Greek yogurt - ($0.60)
- 1 teaspoon vanilla extract - ($0.03)
- ¼ teaspoon almond extract - ($0.08)
- 2-4 tablespoons maple syrup or honey - ($0.08)
- 1 teaspoon chia seeds, optional - ($0.03)
- ¼ teaspoon salt - ($0.01)
- 1 ½ cup old-fashioned rolled oats - ($0.18)
- 2-3 tablespoons rainbow sprinkles - ($0.16)
Instructions
- Mix base. In a bowl, whisk together milk, Greek yogurt, vanilla extract, almond extract, and maple syrup until smooth.
- Add seeds and salt. Whisk in chia seeds if using and salt.
- Add oats. Stir in rolled oats until fully combined.
- Add sprinkles. Gently stir in rainbow sprinkles until evenly distributed.
- Portion. Divide mixture between two 8-ounce containers with lids.
- Chill. Refrigerate at least 6 hours or overnight until set.
- Serve. In the morning, stir and add milk as needed to reach desired consistency. Enjoy as-is or with toppings.
Notes
- Substitutions. Use rolled oats, quick-cook steel-cut oats, or steel-cut oats with minimal texture change.
- Milk Options. Whole, low-fat, almond, coconut, or other preferred milk all work. Unsweetened almond milk is a good option.
- Sweeteners. Honey, maple syrup, agave, or liquid low-carb sweeteners can be used.
- Yogurt Choices. Plain or flavored yogurt works. Greek yogurt adds protein. Yogurt can be omitted by adding an extra ¼ cup milk.
- Meal Prep. Store overnight oats in the refrigerator up to 5 days.
- Texture Tip. Best texture develops after 4 to 6 hours. Eating immediately will result in chewier oats.
Nutritional Information
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