Pumpkin Muffin S’mores Bars

Featured in: Sweet Spark Treats

Experience the comforting flavors of autumn with these bars featuring a soft spiced pumpkin layer nestled atop a buttery graham cracker crust. Semi-sweet chocolate chips add a luscious, melty touch while a topping of golden-toasted mini marshmallows creates a nostalgic finish reminiscent of classic s’mores. Simple to prepare and perfect for gatherings, these bars can be enjoyed warm for extra gooeyness or cooled for easy slicing. Vegetarian-friendly and easily adaptable for gluten-free diets, this dessert combines creamy pumpkin, rich chocolate, and sweet marshmallow in each bite for a festive treat.

Updated on Mon, 27 Oct 2025 11:49:00 GMT
Warm pumpkin muffin s’mores bars topped with fluffy toasted marshmallows and chocolate.  Save
Warm pumpkin muffin s’mores bars topped with fluffy toasted marshmallows and chocolate. | fizznib.com

A delightful fusion of spiced pumpkin muffins and classic s’mores, these bars feature a moist pumpkin base, gooey chocolate, and toasted marshmallows for a cozy, crowd-pleasing treat.

I first made these pumpkin muffin s’mores bars for a family potluck and they were a huge hit with both kids and adults. The layers of gooey chocolate and toasted marshmallows on a spiced pumpkin base always remind me of crisp autumn evenings.

Ingredients

  • Pumpkin Muffin Base: 1 cup (220 g) pumpkin puree, 2 large eggs, 1/2 cup (120 ml) vegetable oil, 3/4 cup (150 g) brown sugar, 1/4 cup (60 ml) milk, 1 1/2 cups (190 g) all-purpose flour, 1 tsp baking powder, 1/2 tsp baking soda, 1/2 tsp salt, 1 tsp ground cinnamon, 1/2 tsp ground ginger, 1/4 tsp ground nutmeg
  • S’mores Layer: 1 cup (120 g) graham cracker crumbs, 2 tbsp (28 g) unsalted butter (melted), 1 cup (170 g) semi-sweet chocolate chips, 2 cups (100 g) mini marshmallows

Instructions

Prepare for Baking:
Preheat oven to 350°F (175°C). Line a 9x9-inch (23x23 cm) baking pan with parchment paper.
Make Crust:
In a medium bowl, combine graham cracker crumbs and melted butter. Press the mixture evenly into the bottom of the prepared pan to form the crust.
Mix Wet Ingredients:
In a large bowl, whisk together pumpkin puree, eggs, oil, brown sugar, and milk until smooth.
Add Dry Ingredients:
Add flour, baking powder, baking soda, salt, cinnamon, ginger, and nutmeg to the wet ingredients. Stir until just combined (do not overmix).
Layer and Bake:
Pour pumpkin muffin batter evenly over the graham cracker crust. Sprinkle chocolate chips evenly over the pumpkin batter. Bake for 25 minutes.
Add Marshmallows:
Remove from oven and scatter mini marshmallows evenly on top. Return to oven for an additional 5 to 7 minutes, or until marshmallows are golden and a toothpick inserted in the center comes out clean (avoid piercing melted chocolate).
Cool and Slice:
Cool completely in the pan before slicing into bars.
Delicious pumpkin muffin s’mores bars showcasing a gooey center and rich chocolate flavor.  Save
Delicious pumpkin muffin s’mores bars showcasing a gooey center and rich chocolate flavor. | fizznib.com

Making these bars together became a Saturday baking tradition for our family, everyone gets to sprinkle the marshmallows before the final bake and sneak a few chocolate chips!

Required Tools

9x9-inch (23x23 cm) baking pan, mixing bowls, whisk, spatula, parchment paper

Nutritional Information (per serving)

Calories: 260, Total Fat: 11 g, Carbohydrates: 38 g, Protein: 3 g

Serving Suggestions

Serve slightly warm for maximum gooeyness or briefly reheat bars in the oven to melt the chocolate and marshmallow topping for best results.

Cozy pumpkin muffin s’mores bars loaded with marshmallows, perfect for a sweet treat. Save
Cozy pumpkin muffin s’mores bars loaded with marshmallows, perfect for a sweet treat. | fizznib.com

Enjoy these pumpkin muffin s’mores bars fresh out of the oven or save a few for a sweet autumn afternoon snack!

Cooking Guide

Can I use canned pumpkin for the base?

Yes, canned pumpkin puree is ideal for the base as it adds moisture and spiced flavor.

What is the best way to toast the marshmallows?

Once marshmallows are added, bake until golden or briefly broil, but watch closely to avoid burning.

Can these bars be made gluten-free?

Absolutely! Substitute gluten-free graham crackers and all-purpose flour for a gluten-free option.

How should I serve these bars for best texture?

Serve slightly warm for extra gooeyness, or cooled for easy slicing and firmer texture.

Are nuts a recommended addition?

Adding chopped toasted pecans can provide extra crunch and flavor to the bars.

How do I store leftover bars?

Store in an airtight container at room temperature for two days, or refrigerate for up to five days.

Pumpkin Muffin S’mores Bars

Gooey bars blend spiced pumpkin, graham cracker crust, melty chocolate, and golden marshmallows for a crowd favorite.

Setup duration
20 min
Heat duration
30 min
Complete duration
50 min
Created by Chloe Bennett


Complexity Easy

Heritage American

Output 12 Portions

Nutrition Categories Meat-Free

Components

Pumpkin Muffin Base

01 1 cup pumpkin puree
02 2 large eggs
03 1/2 cup vegetable oil
04 3/4 cup brown sugar
05 1/4 cup milk
06 1 1/2 cups all-purpose flour
07 1 teaspoon baking powder
08 1/2 teaspoon baking soda
09 1/2 teaspoon salt
10 1 teaspoon ground cinnamon
11 1/2 teaspoon ground ginger
12 1/4 teaspoon ground nutmeg

S’mores Layer

01 1 cup graham cracker crumbs
02 2 tablespoons unsalted butter, melted
03 1 cup semi-sweet chocolate chips
04 2 cups mini marshmallows

Method

Phase 01

Prepare Baking Pan: Preheat oven to 350°F (175°C). Line a 9x9-inch baking pan with parchment paper.

Phase 02

Make S’mores Crust: In a medium bowl, mix graham cracker crumbs with melted butter until evenly combined. Press firmly into the bottom of the prepared pan.

Phase 03

Mix Pumpkin Muffin Batter: In a large bowl, whisk pumpkin puree, eggs, vegetable oil, brown sugar, and milk until smooth.

Phase 04

Combine Dry Ingredients: Add flour, baking powder, baking soda, salt, cinnamon, ginger, and nutmeg to wet mixture. Stir until just combined without overmixing.

Phase 05

Layer Batter and Chocolate: Pour pumpkin muffin batter evenly over crust, then sprinkle chocolate chips over the top.

Phase 06

Initial Bake: Bake for 25 minutes until almost set.

Phase 07

Add Marshmallows and Finish Baking: Remove pan and scatter mini marshmallows evenly over the surface. Return to oven for 5–7 minutes until marshmallows are golden and bars test done with a toothpick (avoid chocolate areas).

Phase 08

Cool and Slice: Let bars cool completely in the pan before dividing into squares for serving.

Kitchen Tools

  • 9x9-inch baking pan
  • Medium and large mixing bowls
  • Whisk
  • Spatula
  • Parchment paper

Sensitivity Guide

Review ingredients carefully for potential allergens and seek professional medical guidance if uncertain.
  • Contains wheat, eggs, milk, soy; possible traces of nuts (confirm by checking labels).

Dietary Information (per portion)

Values shown are estimates only - consult healthcare providers for specific advice.
  • Energy: 260
  • Fats: 11 g
  • Carbohydrates: 38 g
  • Proteins: 3 g