Spooky Ube Rice Krispie Treats
If you’re ready to add something creepily cute and a little unexpected to your Halloween treat table, these Spooky Purple Ube Rice Krispie Treats are about to become your new obsession. They’re everything you love about a classic Rice Krispie treat — soft, chewy, and buttery — but with a gorgeous violet twist thanks to ube extract.
And because we’re in full Halloween mode, I couldn’t stop there. Oh no. These are topped with a gooey layer of marshmallow fluff that you can stretch and swirl into a spooky spider web design, then finished with little black spider sprinkles. It’s such a fun and simple treat that looks like it came straight from a haunted bake shop.
I love how the ube gives these treats a subtle nuttiness and that beautiful purple hue — it’s unexpected, a little magical, and totally fits the Halloween color palette. Plus, the process is quick and easy enough to whip up on a weeknight. You don’t even need to turn on your oven!

Why You’ll Love These Ube Rice Krispie Treats
- No baking required! These spooky treats come together in minutes with just a handful of ingredients.
- A fun ube twist! Ube extract gives classic Rice Krispie treats a gorgeous purple color and a subtle, sweet vanilla-like flavor.
- Perfect for Halloween! Purple treats, gooey marshmallow drizzle, and creepy little spider sprinkles make these almost too cute to eat.
- Easy to customize! Switch up the sprinkles and decorations for any holiday or occasion.
- A crowd favorite! Soft, gooey, crunchy, and just the right amount of spooky.

Ingredient Notes
Rice Krispie Cereal: The classic crispy base that gives these treats their signature crunch.
Unsalted Butter: Adds richness and helps create that soft, gooey marshmallow mixture.
Marshmallows: The key to holding everything together! Regular or mini marshmallows both work.
Ube Extract: The star of the recipe! This gives the treats their beautiful purple color and a sweet, slightly nutty, vanilla-like flavor.
Marshmallow Fluff: Drizzled over the finished treats for an extra gooey, spooky touch. You can also use melted marshmallows.
Black Spider Sprinkles: A fun Halloween finishing touch that makes these purple treats extra festive!

Tips for the Best Ube Rice Krispie Treats
- Use low heat. Melt the butter and marshmallows gently to keep the treats soft and chewy.
- Don’t overmix. Stir just until the cereal is evenly coated with the marshmallow mixture.
- Press gently. Avoid packing the mixture too tightly into the baking dish, which can make the treats dense and hard.
- Work quickly. The marshmallow mixture begins setting as it cools, so transfer it to your prepared dish right away.
- Let them set. Allow the treats to cool and firm up before slicing into squares.

FAQs
What does ube taste like?
Ube is a purple yam popular in Filipino desserts. It has a mildly sweet, nutty flavor with hints of vanilla.
Can I use mini marshmallows?
Absolutely! Mini marshmallows melt quickly and work just as well as regular marshmallows.
Can I make these ahead of time?
Yes! These treats are perfect for preparing a day ahead of a Halloween party. Just keep them in an airtight container until you’re ready to serve.
Can I make these without the spider sprinkles?
Of course! They’re just as delicious without the decorations, or you can swap them for your favorite festive sprinkles.
🫙 Storage Instructions
Store your Ube Rice Krispie Treats in an airtight container at room temperature for up to 3 days for the best texture. If stacking, place parchment paper between layers to prevent sticking.
Freezing: Wrap individual treats tightly in plastic wrap and place them in a freezer-safe container for up to 6 weeks. Thaw at room temperature before enjoying.

My Favorite Baking Tools
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8 x 8-Inch Baking Dish: Perfect for creating thick, chewy Rice Krispie treat squares.
Parchment Paper: Makes removing and slicing the treats easy without sticking.
Silicone Spatulas: Great for stirring the gooey marshmallow mixture and folding in the cereal.
Digital Kitchen Scale: Helps with accurate measurements for consistent results every time.
Ube Extract: The secret to that beautiful purple color and delicious ube flavor!
Ingredients
- 6 cups Rice Krispie cereal
- 3 tablespoons unsalted butter
- 10 ounces marshmallows
- 1 teaspoon ube extract (I got mine on amazon!)
- About ½ cup marshmallow fluff (or melted marshmallows for topping)
- Black spider sprinkles for decoration (Optional- But not really?)

🕷 Directions
Step 1: Prep your pan
Line a 9×9-inch baking pan with parchment paper and set aside.
Step 2: Melt and mix
In a large saucepan, melt your butter over medium heat until it starts to turn slightly golden and smells nutty (that’s when you know it’s perfect).
Add in your marshmallows and stir until completely melted and smooth.
Then, stir in your ube extract until the mixture turns a uniform purple color — it should look like something straight out of a witch’s cauldron. 🧙♀️
Step 3: Add the cereal
Pour in your Rice Krispie cereal and mix until every piece is evenly coated in that purple marshmallow goodness.
Spoon the mixture into your prepared pan and use a spatula to gently press and spread it evenly. Don’t pack it down too hard — you still want that classic chewy texture.
Let cool at room temperature for at least 5 minutes.
Step 4: Add your spooky topping
Once slightly cooled, grab your marshmallow fluff (or melted marshmallows).
To create a spider web look, use your fingers to stretch the fluff over the Rice Krispies in thin, stringy lines — the messier, the better! Alternatively, you can use a spoon to spread it for a smooth “foggy” look.
Finish by sprinkling black spider-shaped sprinkles evenly over the top.
Step 5: Slice and serve!
Once the topping sets, slice your treats into squares and get ready for all the “Ooooh what are these?!” reactions when you bring them out.