Y’all, we have officially made it to the FINALE of birthday bake week. I cannot believe how fast this week has flown by, but I am ending it on the highest, sprinkliest note possible with these Birthday Cake Rice Krispie Treats. They are gooey, buttery, packed with cake batter flavor, drowning in rainbow sprinkles, and finished with the prettiest white chocolate drizzle. Basically a celebration in bar form.
The best part? They are NO-BAKE. After a full week of preheating ovens and timing things and setting alarms, I needed this little treat in my life. You melt some marshmallows on the stovetop, stir in cake mix and a million sprinkles, press into a pan, drizzle, done. We are talking 45 minutes start to finish, and most of that is just waiting for them to set.
These were the perfect filler item in my birthday home café all week long. They sat on the counter looking absolutely adorable next to the muffins and the cookies and the cake, and they got picked up first every single time. They taste like funfetti cake and gooey rice krispie treats had a baby, and that baby is BEAUTIFUL. They are easy enough for a Tuesday afternoon, cute enough for a real birthday party, and they will make you feel like a kid again the second you take a bite.
P.S. Drizzle the white chocolate AFTER you cut them, not before! If you cut through hardened chocolate it just shatters and flakes everywhere. Pop the cut squares on a wire rack, drizzle, and you’ll get those clean bakery-style stripes every single time.
Ingredients Needed
- Mini Marshmallows The whole structure of these treats. We use them two ways: most of them get melted into the gooey marshmallow base, and the rest get folded in OFF the heat to keep their shape. Those whole leftover marshmallows are what makes these extra soft and pillowy instead of crunchy and brittle.
- Unsalted Butter Helps the marshmallows melt smoothly and adds that classic rich rice krispie treat flavor. Use unsalted so you can control the salt yourself, since cake mix already has some.
- Boxed Cake Mix This is the magic ingredient. Use it DRY, straight from the box, no additional ingredients added. It is what gives these treats that unmistakable funfetti box-mix flavor that nothing else can replicate. Any vanilla, white, or yellow cake mix works great.
- Cake Batter Extract Doubles down on the birthday cake flavor and makes everything taste like the inside of a bakery. Find it on Amazon or at Michael’s.
- Vanilla Extract Rounds out the cake batter flavor with that warm classic vanilla note. The two extracts together are what get you that bakery-quality flavor depth.
- Salt Balances all the sweetness and makes every other flavor pop. Even sweet recipes need salt!
- Rice Krispies Cereal The crispy backbone of the whole operation. Do not substitute with off-brand if you can help it, the texture really does matter here.
- Rainbow Sprinkles Because it would not be a birthday treat without them. Use jimmies (the long skinny ones) so they hold their color and don’t bleed into the marshmallow mixture.
- White Chocolate For that pretty bakery-style drizzle on top. Use real white chocolate or white melting wafers, both work beautifully.
- Coconut Oil Just a tiny bit thins out the white chocolate so it drizzles smoothly instead of clumping up. You can sub in a neutral oil if that’s what you have!
Substitutions and Modifications
- No cake batter extract? Use almond extract or just double the vanilla.
- No coconut oil? A neutral oil like vegetable or canola works to thin the white chocolate.
- Want to use marshmallow fluff? Sub in a 7 oz jar of fluff for the 10 oz of melted minis (keep the 6 oz fold-in marshmallows!).
- Want them gluten free? Use a gluten free vanilla cake mix and make sure your rice krispies are GF certified.
- Want a bigger batch? Double everything and use a 9×13 pan instead.
Why You’ll Love This Recipe
- They are 100% NO-BAKE and come together in about 15 active minutes
- The cake mix and cake batter extract combo gives them that unmistakable funfetti flavor
- They stay soft and chewy for DAYS, no rock-hard rice krispie sadness over here
Equipment Needed
- 9×9 inch baking pan
- Large deep saucepan or Dutch oven
- Rubber spatula or wooden spoon
- Microwave-safe bowl
- Wire cooling rack
- Parchment paper (optional but helpful)
- Measuring cups and spoons
Birthday Cake Rice Krispie Treats (Easy, No-Bake Treat)
Ingredients
For the Treats
- 16 oz mini marshmallows divided (10 oz for melting, 6 oz for folding in)
- ¼ cup unsalted butter
- ½ cup dry boxed cake mix any vanilla, white, or yellow
- 1 teaspoon cake batter extract
- 1 teaspoon vanilla extract
- 1 teaspoon salt
- 6 cups Rice Krispies cereal
- â…“ cup rainbow sprinkles jimmies
For the Drizzle
- ¼ cup white chocolate
- 1 teaspoon coconut oil
- Extra sprinkles for topping
Instructions
- Lightly grease a 9×9 inch baking pan or line it with parchment paper. Set aside.
- In a large deep saucepan, melt the 10 oz portion of mini marshmallows with the butter over medium-low heat, stirring constantly until smooth and fully melted (about 5 minutes).
- Turn off the heat. Add the cake batter extract, vanilla extract, salt, and dry cake mix. Stir until everything is smooth and fully incorporated.
- Add the Rice Krispies cereal and the remaining 6 oz of mini marshmallows. Fold gently until the cereal is fully coated.
- Fold in the rainbow sprinkles, just until distributed (do not overmix or they’ll bleed their color).
- Press the mixture into your prepared pan. Use a piece of parchment or a greased spatula to press it in firmly but gently. Pressing too hard makes them dense!
- Let the treats set at room temperature for at least 1 hour, until firm.
- Once set, cut into 16 even squares using a sharp knife or pizza cutter.
- Place the cut squares on a wire rack with parchment underneath to catch drips.
- In a microwave-safe bowl, melt the white chocolate and coconut oil together in 20 second increments, stirring between each, until smooth and silky.
- Drizzle the melted white chocolate over each square and immediately top with extra sprinkles before the chocolate sets.
- Let the chocolate set for about 5 minutes, then enjoy!
Storage Instructions
- Counter: Store in an airtight container at room temperature for up to 3 days. Place parchment between layers so they don’t stick together.
- Fridge: Up to 5 days in an airtight container, but they will firm up. Let them come back to room temp before eating for the best texture.
- Freezer: Up to 1 month, wrapped individually in plastic wrap and stored in a freezer bag. Thaw at room temp.
Tips and Tricks
- Adding the second portion of marshmallows OFF the heat is the SECRET to gooey, soft treats. Do not skip this!
- Press the treats firmly but gently. Pressing too hard makes them dense and tough.
- Drizzle the chocolate AFTER cutting so the lines stay pretty and don’t shatter.
- Use a sharp knife or pizza cutter sprayed lightly with cooking spray for the cleanest cuts.
FAQ
Why are my rice krispie treats hard?
You probably cooked the marshmallows over too high heat or pressed them in too tightly. Melt over LOW heat and press gently!
Can I use marshmallow fluff instead of mini marshmallows?
Yes! Sub one 7 oz jar of fluff for the 10 oz of melted minis. Keep the 6 oz of fold-in marshmallows for that gooey factor.
What kind of cake mix should I use?
Any vanilla, white, or yellow cake mix works perfectly. Funfetti cake mix is a fun option if you want EXTRA sprinkle action!
Can I skip the white chocolate drizzle?
Absolutely. They are still delicious without it, but the drizzle really does take them to bakery-style level.
Why do I add the extracts and salt off the heat?
Adding them after the heat is off preserves the flavor. High heat can cook off some of the extract notes!
Can I make these ahead of time?
Yes! These are perfect for making the day before a party. Store at room temp in an airtight container and drizzle the chocolate the day of for the freshest look.
Do you LOVE Easy No Bake Recipes?! Check Out MORE of my Favs:
3 Ingredient Thin Mint Truffles (Easy No Bake Girl Scout Dessert)
Honey Vanilla Cheesecake Dip (Easy No Bake Dessert + Fruit Dip)
No Bake Four Ingredient Date Bark Recipe
Tag Me!
If you make these Birthday Cake Rice Krispie Treats for your next birthday or just because, please tag me @munchiesbymallory on Instagram and TikTok. I have LOVED sharing birthday bake week with you all, and I cannot wait to see your sprinkle-covered creations pop up in my feed. Until next bake week, friends!
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