Christmas Chocolate Marshmallow Bars
There's something magical about these Christmas Chocolate Marshmallow Bars-the way the warm marshmallows nestle into the chocolatey graham base just screams holiday comfort. Home cooks love them because they're effortless to make yet feel luxurious, perfect for cookie swaps, gift-giving, or just treating yourself during the busiest time of year. The combination of crispy graham, gooey marshmallows, and rich chocolate creates a texture explosion that keeps everyone reaching for seconds. Plus, they come together in under an hour, which is a miracle when your to-do list is miles long.
What Makes This Recipe Special
- The secret weapon is the tiny marshmallows-they puff up into perfect little pillows that melt into the chocolate, creating pockets of airy sweetness you can't get with large marshmallows.
- Using confectioners' sugar in the graham crust gives it a delicate, crumbly texture that's more refined than regular sugar, making these bars feel like a bakery creation.
- The 350°F oven temperature is carefully calibrated to set the edges while keeping the center gooey, a balance that's tricky to achieve but makes these bars irresistible.
- The optional diced nuts add subtle crunch without overpowering the chocolate, and pecans or walnuts work best to complement the cocoa flavor.
Ingredients
2 cupscrushed graham crackers
1 1/2 cupsconfectioners' sugar
3/4 cupmelted unsalted butter
1/4 cupplain cocoa powder
3 cupstiny marshmallows
1 1/2 cupschocolate morsels
1/2 cupdiced nuts (if you want)
Nutrition
430 caloriesCalories
Per serving · Values are estimates
Instructions
1
Warm up your oven to 350°F. Make sure it's completely heated before you start baking so everything cooks evenly.
2
Grab a big bowl and mix the crushed graham crackers, cocoa powder, and confectioners' sugar together. Stir until everything's mixed well with no clumps left.
3
Add your melted butter to the dry stuff. Mix it all with a strong spoon or spatula until everything's damp. The mix will end up thick and a bit gooey.
4
Gently stir in your tiny marshmallows, chocolate morsels, and the nuts if you're using them. Just mix enough to spread everything around. Don't mix too much or you'll ruin the marshmallow bits.
5
Coat a 9x13 inch baking dish with cooking spray or put down some parchment paper. Dump the mixture in and flatten it out with your spatula until it's even.
6
Stick the pan on the middle shelf and bake for about 25 to 30 minutes. You'll know it's done when the edges look set and the middle feels slightly firm when you touch it.
7
Take the pan out and let everything cool down completely. After it's cooled, use a sharp knife to cut it into 40 equal squares.
Essential Tips
Chill before cutting
Let the bars cool completely at room temperature before slicing-this prevents the chocolate from dragging and ensures clean, sharp edges. If you're in a hurry, refrigerate for 15 minutes but keep an eye on it so the marshmallows don't firm up too much.
Butter your knife
Dip a sharp chef's knife in warm water and wipe it dry before each cut. This creates a smooth glide through the chocolate and prevents sticking, giving you professional-looking squares every time.
Toast the nuts
If using nuts, toast them in a dry skillet for 2-3 minutes until fragrant before dicing. This deepens their flavor and adds a subtle crunch that pairs beautifully with the chocolate.
Spread evenly
Use an offset spatula or the back of a spoon to spread the mixture into the pan as evenly as possible. This ensures consistent baking and makes cutting into even squares much easier.
Check at 22 minutes
Start peeking at 22 minutes-edges should be set and slightly golden, but the center should still look slightly underdone. It will finish setting as it cools, guaranteeing a gooey center.
Smart Swaps & Variations
Peppermint Twist
Add 1/2 teaspoon peppermint extract to the chocolate morsels and top with crushed candy canes after baking for a festive, refreshing twist.
Salted Caramel
Drizzle store-bought or homemade salted caramel sauce over the top layer before baking for a decadent, salty-sweet combination.
White Chocolate
Swap the chocolate morsels for white chocolate and omit the cocoa powder in the crust for a sweeter, creamier version.
Gluten-Free
Use gluten-free graham crackers and ensure all ingredients (including chocolate morsels) are certified gluten-free to make this allergy-friendly.
What to Serve With This
- Warm mugs of hot cocoa or peppermint mocha for a cozy holiday treat.
- A dusting of powdered sugar and a sprig of fresh mint for an elegant presentation at cookie swaps.
- Vanilla bean ice cream or chocolate gelato for a decadent dessert pairing.
- A glass of sparkling wine or eggnog to balance the sweetness during festive gatherings.
Storage & Reheating
Storage
Store bars in an airtight container at room temperature for up to 5 days, or refrigerate for up to 1 week. The chocolate may bloom if frozen, so avoid freezing unless using a protective layer of plastic wrap.
Reheating
For best texture, warm individual bars in the microwave for 5-10 seconds or in a 300°F oven for 3-4 minutes. Avoid high heat, which can make the marshmallows tough and the chocolate grainy.
Expert Chef Tips
- Use a microplane to zest an orange over the mixture before baking-it brightens the chocolate flavor without overpowering it, adding a sophisticated citrus note.
- For extra gooey centers, sprinkle a handful of mini marshmallows on top of the batter in the last 5 minutes of baking so they melt just enough to create a marshmallow layer.
- If the crust is browning too quickly, tent the pan with foil for the last 10 minutes of baking to prevent over-browning while ensuring the center sets properly.
Equipment You’ll Need
- 9x13-inch baking pan
- Medium mixing bowl
- Measuring cups and spoons
- Offset spatula or rubber spatula
- Sharp chef's knife
- Parchment paper or cooking spray
Nutritional Benefits
- These bars are high in carbohydrates from the graham crackers and sugar, so enjoy them in moderation as an occasional treat during the holiday season.
- A single bar provides about 8% of the daily recommended intake of iron, thanks to the cocoa powder, which is a good source of this essential mineral.
- The nuts add healthy fats and a small amount of protein, but the high sugar content means they shouldn't be relied on for nutritional value.
- Using unsalted butter allows you to control the sodium content, making these bars a better choice for those monitoring their salt intake.
Reviews
No written reviews yet — be the first to cook this and share how it turned out!
Leave a Review
Frequently Asked Questions
Can I use regular marshmallows instead of tiny ones?
Yes, but chop them into small pieces first so they distribute evenly and melt properly. Mini marshmallows are ideal because they create pockets of airy texture without needing to be cut.
Why did my crust come out too hard?
This happens if the butter is too warm when mixed in or if the bars are overbaked. Make sure your butter is melted but not hot, and remove the bars from the oven as soon as the edges are set and the center is slightly jiggly.
Can I make these ahead of time?
Absolutely! They taste even better the next day as the flavors meld. Make them up to 2 days ahead and store at room temperature in an airtight container. Slice just before serving for the cleanest cuts.
What's the best way to transport these for a cookie swap?
Let them cool completely, then cut and arrange in a single layer in a sturdy container with parchment paper between layers. Pack them in the center of your car (not the trunk) to avoid temperature fluctuations that could melt the chocolate.
Can I substitute semi-sweet chocolate chips for the morsels?
Yes, but use high-quality chips-they melt more evenly and have better flavor. Avoid ultra-sweet or dark chocolate, as they can overpower the marshmallows and graham base.
Why are my nuts sinking to the bottom?
This happens if the nuts are too large or not mixed thoroughly. Dice them finely and fold them in gently but thoroughly so they distribute evenly throughout the batter.
Can I add sprinkles for a festive touch?
Yes! Toss them into the batter just before spreading into the pan, or press them into the top after baking for a fun, colorful presentation. Use holiday-themed sprinkles for extra Christmas cheer.
How do I make these bars extra gooey?
Add 1/4 cup of corn syrup to the melted butter and sugar mixture before combining with the graham crackers. This keeps the bars moist and gooey for days.
More Christmas
🔒 From the Vault — 43,000+ premium recipes
Cook This Next