Start your day with a celebration with this recipe for Birthday Cake Overnight Oats. This simple, no-cook breakfast is the ultimate meal-prep solution, combining hearty rolled oats with the nostalgic flavors of funfetti cake batter and colorful rainbow sprinkles. It’s a healthy, satisfying, and incredibly delicious way to have a treat waiting for you, even on the busiest mornings.
This recipe takes just five minutes to mix together the night before, and the refrigerator does all the work. You’ll wake up to a thick, creamy, and perfectly sweet breakfast that’s ready to grab and go. It’s a simple, wholesome classic for anyone who believes every day should be a little bit of a party.

Why You’ll Love This Recipe
- Tastes Like a Celebration: All the fun, sweet flavor of funfetti birthday cake in a healthy breakfast form.
- 5-Minute Meal Prep: The perfect make-ahead breakfast for busy mornings.
- Healthy & Filling: Packed with fiber from oats and chia seeds to keep you full and energized.
- Simple Pantry Ingredients: Made with just a handful of common kitchen staples.
Ingredients
- 1/2 cup Rolled Oats (Old-Fashioned)
- 2/3 cup Milk (dairy or non-dairy like almond or oat milk)
- 1/4 cup Plain or Vanilla Greek Yogurt
- 2 tablespoons Maple Syrup
- 1 tablespoon Chia Seeds
- 1/2 teaspoon Vanilla Extract
- 1/8 teaspoon Almond Extract (optional, but gives a “cake batter” flavor)
- Pinch of Salt
- 2 tablespoons Rainbow Sprinkles, plus more for topping
Step-by-Step Instructions
- Combine Ingredients: In a mason jar, small bowl, or any container with a lid, add the rolled oats, milk, Greek yogurt, maple syrup, chia seeds, vanilla extract, almond extract (if using), and salt.
- Mix Thoroughly: Stir everything together until well combined, making sure the chia seeds are evenly distributed.
- Add Sprinkles: Gently stir in the 2 tablespoons of rainbow sprinkles.
- Chill Overnight: Cover the container and place it in the refrigerator for at least 6 hours, or preferably overnight.
- Serve: The next morning, give the oats a good stir. If they are thicker than you’d like, add another splash of milk to reach your desired consistency. Top with extra rainbow sprinkles and enjoy cold.
Tips & Variations
- Pro Tip: The small amount of almond extract is the secret ingredient that really mimics the taste of cake batter. A little goes a long way!
- Boost the Protein: Add a scoop of your favorite vanilla or unflavored protein powder with the dry ingredients. You may need to add an extra splash of milk.
- Add-Ins: For extra decadence, stir in a tablespoon of white chocolate chips.
- Yogurt Choice: Using vanilla-flavored Greek yogurt will add an extra layer of sweetness and flavor.

Frequently Asked Questions (FAQ)
- Will the sprinkles dissolve overnight?
- Some of the color from the sprinkles will bleed into the oats, which adds to the fun, colorful look! They will soften but not completely dissolve.
- How long do these last in the refrigerator?
- You can meal prep these for up to 4 days. Store them in individual airtight containers in the fridge for an easy grab-and-go breakfast.
- Can I use steel-cut or quick oats?
- Rolled oats provide the best chewy texture. Quick oats will result in a much softer, porridge-like consistency, while steel-cut oats will not soften enough without being cooked.
Serving Suggestions
- These birthday cake overnight oats are delicious served chilled. For the full experience, top them with a generous amount of extra rainbow sprinkles just before eating.

Birthday Cake Overnight Oats
These Birthday Cake Overnight Oats taste like dessert for breakfast! With rainbow sprinkles, vanilla notes, and a creamy texture, they make every morning feel like a celebration.
Equipment
- Mason jar or container with lid
- Spoon
Ingredients
- 1/2 cup oats (quick, minute, or rolled)
- 1 tablespoon chia seeds
- 2 tablespoon vanilla protein powder (optional)
- 3 tablespoon vanilla Greek yogurt
- 3/4 cup milk
- 1/4 teaspoon almond extract
- 1/4 teaspoon vanilla extract
- 1/2 teaspoon honey (optional)
- 2 teaspoon sprinkles
Instructions
- In a mason jar or container, add oats, chia seeds, and vanilla protein powder (if using).
- Add in Greek yogurt, milk, almond extract, vanilla extract, and honey (if using). Stir to combine.
- Mix in sprinkles and stir until evenly distributed.
- Add the lid to the jar and place in the fridge for at least 2 hours or overnight.
- In the morning, top with extra yogurt or whipped cream if desired and enjoy!
Notes
You can substitute plain Greek yogurt for vanilla, but be sure to add honey for sweetness. Refrigerate at least 2 hours or overnight for best results. Top with extra yogurt or whipped cream before serving for a festive touch.