This Fall Pumpkin Marshmallow Coffee Syrup is the perfect way to add a touch of seasonal sweetness to your morning cup. It blends the warm flavors of pumpkin with a hint of cozy spices, all wrapped up in a smooth, sweet marshmallow finish. A special syrup that turns any coffee into a little moment of autumn magic.
I love keeping a bottle of this syrup handy for those crisp fall mornings when I want something a little different but still comforting. A quick splash in my coffee makes it taste like a treat, without needing to visit a café. Plus, it’s so easy to make at home—you can control how sweet or spiced you want it. I usually add a bit more marshmallow flavor because it reminds me of cozy evenings by the fire.
One of my favorite ways to enjoy this syrup is by drizzling it over whipped cream on top of a latte, or even mixing it into hot chocolate for a fun twist. It’s great for friends and family who stop by, and I often get asked for the recipe because it really brings that classic fall feeling in every sip. If you love pumpkin and marshmallow together, this syrup is a simple way to make your coffee extra special all season long.
Key Ingredients & Substitutions
Pumpkin Puree: Using canned pumpkin puree (not pumpkin pie filling) adds that natural pumpkin flavor and keeps the syrup smooth. If you can’t find canned pumpkin, homemade puree works great too.
Pumpkin Pie Spice: This blend gives the syrup its warm, fall flavor. If you don’t have it, mix cinnamon, nutmeg, ginger, and cloves yourself. Adjust the amounts to match your taste.
Marshmallow Fluff: Marshmallow fluff adds sweetness and a creamy texture to the syrup. You can substitute with marshmallow creme or even a little vanilla marshmallow syrup if needed.
Sugars: Both granulated and light brown sugar create a rich, sweet base. Light brown sugar adds a slight caramel note which I really like. You can swap for coconut sugar for a softer flavor but expect a darker syrup.
How Do I Get the Syrup Smooth Without Clumps?
One challenge is preventing clumps from the pumpkin and spices. Here’s my method for a silky syrup:
- After simmering pumpkin and spices with the sugars, lower the heat before adding marshmallow fluff to avoid burning or curdling.
- Stir gently but constantly to melt the marshmallow fluff evenly into the syrup.
- Once done, strain the syrup through a fine mesh sieve or cheesecloth to catch any bits of pumpkin or spices — this step makes your coffee syrup silky smooth.
Cool the syrup before bottling to thicken it up a bit. Store it in the fridge, and it should stay fresh for up to two weeks.
Equipment You’ll Need
- Medium saucepan – I like it because it heats evenly and is perfect for simmering the syrup.
- Whisk or spoon – helps you stir everything smoothly without lumps or burning.
- Fine mesh sieve or cheesecloth – makes your syrup super silky by straining out spice bits and pumpkin pulp.
- Measuring cups and spoons – for accurate ingredient amounts, especially for pumpkin and spices.
- Storage bottle or jar – keeps your syrup fresh in the fridge and ready to pour over coffee.
Flavor Variations & Add-Ins
- Swap marshmallow fluff for toasted marshmallows: adds a more intense marshmallow flavor and a nice toasted touch on top.
- Use chai spice instead of pumpkin pie spice for a different warm, spicy flavor with black tea notes.
- Mix in a splash of bourbon or spiced rum for an adults-only twist—perfect for cozy evening drinks.
- Add a pinch of cayenne pepper or chili powder if you like a little heat to balance the sweetness.
Fall Pumpkin Marshmallow Coffee Syrup
Ingredients You’ll Need:
For the Syrup:
- 1 cup water
- 1 cup granulated sugar
- 1/2 cup light brown sugar, packed
- 1/2 cup canned pumpkin puree (not pumpkin pie filling)
- 2 tsp pumpkin pie spice (or a blend of cinnamon, nutmeg, ginger, and cloves)
- 1 tsp vanilla extract
- 1/2 cup marshmallow fluff or marshmallow creme
- 1/4 tsp salt
How Much Time Will You Need?
This recipe takes about 10 to 15 minutes to prepare. The syrup simmers and blends flavors in about 5 minutes, followed by stirring in the marshmallow fluff and cooling before storing. It’s a quick way to add fall flavors to your coffee.
Step-by-Step Instructions:
1. Make the Sugar Base:
In a medium saucepan, combine the water, granulated sugar, and brown sugar. Heat over medium, stirring often until all the sugar dissolves completely, creating a smooth syrup base.
2. Add Pumpkin and Spices:
Next, stir in the pumpkin puree and pumpkin pie spice. Lower the heat and let the mixture simmer gently for about 5 minutes. Stir frequently to prevent sticking and help the flavors come together nicely.
3. Incorporate Marshmallow Fluff:
Reduce the heat to low and add the marshmallow fluff. Stir continuously until it melts and blends smoothly into the syrup, giving it a rich, creamy texture.
4. Finish and Cool:
Stir in the vanilla extract and salt for depth of flavor. Remove the saucepan from heat and allow the syrup to cool. Once cool, strain the syrup through a fine mesh sieve or cheesecloth to remove any bits of pumpkin or spices, ensuring a smooth finish.
5. Store and Serve:
Transfer the syrup to a clean jar or bottle and refrigerate. To enjoy, pour 1 to 2 tablespoons into your coffee or espresso. For an extra treat, top with whipped cream, a sprinkle of cinnamon or pumpkin pie spice, and mini marshmallows if you like. Use within two weeks for the best flavor.
Can I Use Homemade Pumpkin Puree Instead of Canned?
Absolutely! Homemade pumpkin puree works just as well. Just make sure it’s smooth and not too watery for the best syrup consistency.
How Should I Store the Syrup?
Keep your syrup in an airtight container or bottle in the refrigerator. It stays fresh for up to two weeks—just give it a good shake before using if it separates.
Can I Adjust the Sweetness or Spice Levels?
Yes! Feel free to add more or less sugar or pumpkin pie spice depending on your taste. Start with less and adjust after tasting the syrup toward the end of cooking.
What’s the Best Way to Use This Syrup?
It’s perfect for drizzling into coffee, espresso drinks, or even hot chocolate. Try topping your drink with whipped cream and a sprinkle of cinnamon or mini marshmallows for an extra cozy touch.