This pumpkin spice rice krispie treats recipe produces bars that are golden, chewy, and warmly spiced throughout, with real pumpkin puree and warm pumpkin pie spice woven into the marshmallow base so the flavor carries through every square from edge to center.
The marshmallow catches the pumpkin and spice as it melts and holds both through the finished bar, the kind of autumn treat that smells like the season the moment the pan comes off the heat.
They pair naturally with Easy Pumpkin Spice Latte Recipe and Easy Homemade Pumpkin Pie Spice, and Creamy Homemade Pumpkin Puree and Homemade Marshmallow Recipe make the whole recipe fully from scratch.

Why You’ll Love This Recipe

Ingredients
For The Pumpkin Rice Krispies
For the Drizzle

Variations & Add-Ins
Recipe Tips
Keep the heat on medium-low throughout – high heat makes the marshmallow mixture cook too fast, which causes the finished bars to set hard rather than chewy. Medium-low heat gives the marshmallows time to melt fully and evenly without overheating the sugar.
Let the marshmallow mixture cool before adding the cereal – once the pan comes off the heat, rest the marshmallow mixture for 5 to 10 minutes before the cereal goes in. Adding cereal to a too-hot mixture causes it to soften and lose its crunch before the bars even set.
Grease your hands or spatula before pressing – a light coat of butter or cooking spray on your palms or spatula lets you press the bars evenly to the corners without the mixture sticking and tearing.
Do not press too firmly – a gentle, even press is all the bars need to set cleanly. Pressing too hard compacts the cereal and produces a dense, flat bar rather than a light, chewy one.
Use a buttered knife for clean cuts – run a buttered knife around the edges of the pan after the bars have rested for one full hour, then cut into squares, wiping and re-buttering the blade after each cut for the cleanest slices.
Drizzle after the bars are fully set – adding the drizzle before the bars have set causes it to sink rather than sit on the surface. Let the bars rest the full hour before drizzling, and let the drizzle set for 10 to 15 minutes before slicing.



Instructions
- Prepare the pan – butter a 9×9 inch pan generously or line with parchment leaving an overhang on both sides for easy lifting, then lightly grease the parchment. Set aside near the stove.
- Melt the butter and pumpkin – in a large saucepan over medium-low heat, melt the butter until fully melted and foamy around the edges. Whisk in the pumpkin puree until smooth and warmed through, about 1 minute.
- Melt the marshmallows – add the mini marshmallows and stir constantly until completely melted and the mixture is glossy and smooth, about 3 to 5 minutes. Keep the heat on medium-low throughout.
- Add the flavorings – remove the saucepan from the heat. Stir in the vanilla extract, pumpkin pie spice, and sea salt until the mixture is even and fragrant. Let the mixture rest off the heat for 5 to 10 minutes before adding the cereal.
- Fold in the cereal – pour the crispy rice cereal into the saucepan and fold gently with a greased spatula until every piece is coated. Work with a light hand and fold just until combined.
- Press into the pan – scrape the mixture into the prepared pan and press evenly with greased hands or a greased spatula, working all the way to the corners and edges.
- Rest and set – cover loosely and let the bars sit at room temperature for 1 full hour until firm enough to slice cleanly.
- Slice the bars – run a buttered knife around the edges of the pan, then cut into 24 squares, wiping and re-buttering the blade after each cut.
- Add the drizzle, optional – melt the white chocolate or butterscotch chips with the heavy cream in 30-second intervals, stirring after each, until smooth. Add more cream one teaspoon at a time for a thinner drizzle. Drizzle over the set bars and let set for 10 to 15 minutes before serving.
- Serve – lift the slab from the pan using the parchment overhang, transfer to a cutting board, and serve alongsideEasy Pumpkin Spice Latte Recipe for a full cottage kitchen autumn treat spread.
Gifting Ideas

Freezing and Storage
- Room temperature – store bars in an airtight container at room temperature for up to 1 week with a sheet of parchment between each layer to prevent sticking.
- Refrigerator – refrigerating rice krispie treats firms them significantly. If refrigeration is needed, bring bars to room temperature for 20 to 30 minutes before serving.
- Freezer – wrap each bar individually in parchment then foil and transfer to a freezer-safe bag or airtight container for up to 1 month. Thaw at room temperature for 20 to 30 minutes. The drizzle may lose its sheen after freezing but the bars taste the same.
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Pumpkin Spice Rice Krispie Treats
Equipment
- 1 9×9 Pan (or 8×8 for taller squares)
- 1 Large saucepan or pot
- 1 spatula (greased)
Ingredients
- 3 tablespoons salted butter 42 grams
- ¼ cup pumpkin puree 60 grams, 100 percent pure pumpkin
- 10 ounces mini marshmallows 283 grams
- ¼ teaspoon vanilla extract 1 gram
- 1 teaspoon pumpkin pie spice 2 grams
- ⅛ teaspoon sea salt 1 gram
- 6 cups crispy rice cereal 165 grams
For the Optional Drizzle:
- 2 ounces white chocolate or butterscotch chips 57 grams
- 1 to 4 tablespoons heavy whipping cream 15 to 60 grams, added one teaspoon at a time for desired consistency
Instructions
- Prepare the pan – butter a 9×9 inch pan generously or line with parchment leaving an overhang on both sides, then lightly grease the parchment.
- Melt the butter and pumpkin – in a large saucepan over medium-low heat, melt the butter until foamy around the edges. Whisk in the pumpkin puree until smooth and warmed through, about 1 minute.
- Melt the marshmallows – add the mini marshmallows and stir constantly until completely melted and glossy, about 3 to 5 minutes. Keep the heat on medium-low throughout.
- Add the flavorings – remove from heat. Stir in the vanilla extract, pumpkin pie spice, and sea salt until even and fragrant. Rest off the heat for 5 to 10 minutes before adding the cereal.
- Fold in the cereal – add the crispy rice cereal and fold gently with a greased spatula until every piece is coated.
- Press into the pan – scrape the mixture into the prepared pan and press evenly with greased hands or a greased spatula all the way to the corners.
- Rest and set – cover loosely and rest at room temperature for 1 full hour.
- Slice – run a buttered knife around the edges, then cut into 24 squares, wiping and re-buttering the blade after each cut.
- Drizzle, optional – melt the white chocolate or butterscotch chips with the heavy cream in 30-second intervals until smooth. Drizzle over the set bars and let set for 10 to 15 minutes before serving.
Notes
Nutrition
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Emily Rider
Home miller since 1999 with fresh-milled flour & sourdough experience. Sharing from-scratch recipes and traditional kitchen skills, rooted in the seasons and inspired by everyday cottage living and seasonal rhythms.

Prefect fall treat! Easy to follow recipe ❤️
Thank you for your feedback! We are glad to hear that you enjoyed the pumpkin spice Rice Krispie treats recipe and found it easy to follow. It’s a great treat to enjoy during the fall season.