No-Bake Pumpkin Spice Fudge with Cinnamon Swirl

The pumpkin mixture starts out thin and bubbly, then thickens as the sugar cooks; that change is easy to miss if you’re watching the clock instead of the thermometer. For…

By Brad
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October 17, 2026
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Reading time: 8 min

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The pumpkin mixture starts out thin and bubbly, then thickens as the sugar cooks; that change is easy to miss if you’re watching the clock instead of the thermometer. For this no-bake pumpkin spice fudge with cinnamon swirl, the candy thermometer gives you a clear endpoint, while a cinnamon-swirled portion makes every piece look a little different.

I stir the white chocolate chips and marshmallow creme in after taking the pan off the heat. The hot fudge melts them without keeping the delicate white chocolate over a burner, and a final splash of vanilla rounds out the pumpkin spice. The cinnamon ribbon comes from the same fudge base, so it sets with the same soft texture rather than leaving a dry layer on top.

Once the slab has chilled firm, the parchment overhang makes it easy to lift out and cut into neat squares. Each piece has a smooth pumpkin center and a warm cinnamon line running through it.

Why Chilling Won’t Rescue Fudge That Didn’t Cook Long Enough

Refrigerating fudge firms it, but the set starts on the stove. As the sugar mixture boils, water evaporates and the syrup becomes concentrated enough to hold its shape after cooling. Pumpkin puree brings extra moisture into that mixture, which is why a bubbling pan or a familiar cook time alone can’t tell you whether the batch is ready.

A candy thermometer gives you a repeatable endpoint. If the syrup comes off the heat too soon, the finished fudge may stay soft even after a long chill; cooking it too far can leave it firm or crumbly. The thermometer reading is more useful than trying to judge the bubbles by eye, especially because stove heat and pan thickness affect how quickly the mixture reaches its target.

Once the cooked base reaches the right stage, the white chocolate and marshmallow creme go in off the heat. That order matters: they melt into the hot syrup rather than cooking alongside it. You get a smoother mixture and a fudge that cuts cleanly after it has had time to cool and set.

Why Plain Pumpkin Puree and Evaporated Milk Matter in This Fudge

• Pumpkin puree — Choose plain pumpkin puree, not pumpkin pie filling, which already contains sweetener and spices and would change the balance of the candy. Canned puree is convenient and consistent; if using homemade puree, it should be smooth and not watery, since excess liquid affects how the fudge sets.
• Evaporated milk — This concentrated milk supplies moisture without the extra sugar in sweetened condensed milk. The two cans may sit near each other at the store, but they aren’t interchangeable here. Use evaporated milk for the measured candy mixture.
• White chocolate chips — They melt into the hot base and give the fudge its creamy texture. A fresh bag that melts smoothly is worth choosing; older chips may take more stirring. Don’t swap in a different chocolate and expect the same flavor or set.
• Marshmallow creme — This helps the fudge turn smooth and tender rather than setting like a brittle sugar candy. Use the jarred creme, not marshmallows substituted by volume; they don’t measure or melt the same way.
• Pumpkin pie spice and cinnamon — Pumpkin pie spice seasons the full batch, while the ground cinnamon goes into the reserved portion for the swirl. Fresh-smelling spices give a clearer aroma, but there’s no need for a specialty brand.

Cook the Pumpkin Base to the Right Candy Stage

Line the Pan Before the Sugar Starts Cooking

Line an 8-inch square pan with parchment, leaving overhang on two sides so you can lift out the slab later. Set out a heavy-bottomed 3-quart saucepan, a small bowl for the reserved fudge, and the candy thermometer before you begin. The pan size gives the batch enough depth for the cinnamon swirl and 36 cut pieces. Keeping the equipment ready means you won’t have to hunt for anything once the hot mixture is finished.

Bring the Pumpkin Mixture to a Full Boil

Combine the sugar, butter, evaporated milk, pumpkin puree, pumpkin pie spice, and salt in the saucepan. Cook over medium heat, stirring constantly, until the mixture reaches a full boil; this takes about 5 minutes. Watch for steady bubbles across the surface, not just a few at the edges. Keep stirring so the thickening pumpkin mixture doesn’t scorch on the bottom of the pan.

Use the Thermometer, Not the Clock, to Finish the Syrup

Continue boiling and stirring until the candy thermometer reads 234°F, which takes about 8 to 12 minutes. Clip the thermometer where its tip sits in the mixture without touching the bottom of the pan, or the reading may be off. When it reaches 234°F, take the saucepan off the heat. Don’t stop early because the mixture looks thick; the temperature is the reliable cue for the finished candy base.

Melt, Swirl, and Let the Slab Set

Stir the white chocolate chips and marshmallow creme into the hot mixture until smooth, then stir in the vanilla extract. Transfer 1 cup to the small bowl and mix in the cinnamon until evenly combined. Pour the remaining fudge into the lined pan, dollop the cinnamon mixture over it, and gently draw a knife through the dollops to make a swirl. Cool at room temperature for 1 hour, then refrigerate uncovered until firm, at least 3 hours; lift the slab out by the parchment and cut it into 36 pieces.

Three Small Changes to the Cinnamon Swirl Fudge

Questions That Come Up When Making Pumpkin Fudge

No-Bake Pumpkin Spice Fudge with Cinnamon Swirl

No-bake pumpkin spice fudge combines pumpkin puree, white chocolate, and marshmallow creme for a smooth, creamy treat. A cinnamon fudge swirl adds a warm spice accent, and the pieces set in the refrigerator before cutting.

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Prep Time 15 minutes mins

Cook Time 17 minutes mins

cooling and chilling 4 hours hrs

Total Time 4 hours hrs 32 minutes mins

Servings: 36 servings

Course: Dessert

Cuisine: American

Calories: 190

Ingredients Equipment Method Notes

Ingredients

  

For the pumpkin fudge

• 3 cups granulated sugar
• 0.75 cup unsalted butter
• 0.67 cup evaporated milk
• 0.5 cup pumpkin puree
• 1 tsp pumpkin pie spice
• 0.25 tsp salt
• 12 oz white chocolate chips
• 1 jar (7 oz) marshmallow creme
• 1 tsp vanilla extract

For the cinnamon swirl

• 1 tsp ground cinnamon

Equipment

• 1 8-inch square pan
• 1 heavy-bottomed 3-quart saucepan
• 1 candy thermometer

Method

 

Cook the pumpkin fudge

1. Line an 8-inch square pan with parchment paper, leaving overhang on two sides.
2. Combine the sugar, butter, evaporated milk, pumpkin puree, pumpkin pie spice, and salt in a heavy-bottomed 3-quart saucepan.
3. Cook over medium heat, stirring constantly, until the mixture reaches a full boil, about 5 minutes.
4. Continue boiling and stirring until a candy thermometer reads 234°F, about 8 to 12 minutes.
5. Remove the pan from the heat.
6. Stir in the white chocolate chips and marshmallow creme until smooth.
7. Stir in the vanilla extract.
8. Immediately transfer 1 cup of the fudge mixture to a small bowl.

Make the cinnamon swirl

1. Stir the cinnamon into the reserved cup of fudge until evenly combined.
2. Pour the remaining fudge into the prepared pan.
3. Dollop the cinnamon mixture over the top.
4. Gently swirl the cinnamon mixture through the fudge with a knife.

Set and cut the fudge

1. Let the fudge cool at room temperature for 1 hour.
2. Refrigerate uncovered until firm, at least 3 hours.
3. Lift the fudge out using the parchment overhang and cut into 36 pieces.

Notes

For smooth fudge, stir constantly while cooking and use a candy thermometer to check that it reaches 234°F. Store covered in the refrigerator for up to 1 week; freeze for up to 2 months.