Indulging in a sweet treat that combines the chewy texture of blondies with the delightful flavors of marshmallows and toffee is pure bliss. These Marshmallow Toffee Blondies are not just easy to make, they’re also a crowd-pleaser that will leave your friends and family begging for the recipe. Soft, gooey, and packed with flavor, this dessert is perfect for any occasion, whether it’s a casual family gathering or a festive holiday celebration. Let’s dive into how to make these decadent blondies!
Why You’ll Love This Recipe

These Marshmallow Toffee Blondies are a delightful twist on the classic blondie. Here’s why they’re sure to become your new favorite:
– **Irresistible Flavor Combination**: The sweetness of the brown sugar, the richness of toffee bits, and the gooeyness of marshmallows create a flavor explosion in every bite.
– **Easy to Make**: With simple ingredients and straightforward steps, even novice bakers can whip these up in no time.
– **Perfect for Sharing**: Whether you’re hosting a party or just want to surprise your neighbor, these blondies are perfect for sharing.
What You’ll Gather
To make these Marshmallow Toffee Blondies, you’ll need the following ingredients:
- 2 1/4 cups Kroger all-purpose flour
- 1 teaspoon sea salt
- 1/2 teaspoon baking soda
- 1 1/2 cups packed Kroger light brown sugar
- 12 tablespoons butter, melted and slightly cooled
- 2 large Kroger eggs, at room temperature
- 2 teaspoons pure vanilla extract
- 1 1/4 cups Kroger mini marshmallows
- 1 1/4 cups semi-sweet chocolate chips
- 1 cup toffee bits or chopped up Heath or Skor candy bars
- Sea salt for sprinkling on blondies
Setup & Equipment
Before you get started, make sure you have the following tools on hand:
- 9×13-inch baking pan
- Mixing bowls (one for dry ingredients, one for wet ingredients)
- Whisk and spatula
- Measuring cups and spoons
- Oven mitts for safe handling
Marshmallow Toffee Blondies in Steps

Step 1: Preheat Your Oven
Preheat your oven to 350°F (175°C) and grease your 9×13-inch baking pan or line it with parchment paper for easy removal.
Step 2: Combine Dry Ingredients
In a medium mixing bowl, whisk together the flour, sea salt, and baking soda until well combined. Set this mixture aside.
Step 3: Mix Wet Ingredients
In a large bowl, combine the melted butter and brown sugar. Stir until the mixture is smooth and well blended. Add the eggs one at a time, mixing well after each addition. Then stir in the vanilla extract.
Step 4: Combine Wet and Dry Ingredients
Gradually add the dry ingredient mixture to the wet ingredients, folding until just combined. Be careful not to overmix, as this could lead to dense blondies.
Step 5: Fold in Chocolate, Marshmallows, and Toffee
Gently fold in the mini marshmallows, semi-sweet chocolate chips, and toffee bits. This is where the magic happens—each bite will be packed with deliciousness!
Step 6: Pour and Smooth
Pour the batter into the prepared baking pan, smoothing the top with a spatula. Give it a gentle shake to level it out.
Step 7: Bake
Bake in the preheated oven for about 25-30 minutes, or until the edges are golden brown and a toothpick inserted into the center comes out with a few moist crumbs.
Step 8: Cool and Sprinkle
Once baked, remove the blondies from the oven and let them cool in the pan for about 10 minutes. Then, sprinkle a little sea salt on top for an extra flavor boost.
Step 9: Cut and Serve
After the blondies have cooled completely, cut them into squares and serve. Enjoy the gooey marshmallows and crunchy toffee bits!
Customize for Your Needs

These Marshmallow Toffee Blondies are versatile and can be adjusted to suit your preferences:
- For a nutty flavor, add 1 cup of chopped nuts such as walnuts or pecans.
- Swap out semi-sweet chocolate chips for dark chocolate or white chocolate for a different twist.
- Add a hint of espresso powder to enhance the chocolate flavor.
- For a fun seasonal touch, mix in some crushed candy canes during the holidays.
Mistakes Even Pros Make
Even experienced bakers can run into a few hiccups. Here are some common mistakes to avoid:
- Overmixing the batter can lead to tough blondies. Mix just until combined for a soft texture.
- Not letting the butter cool before mixing can cause the eggs to scramble.
- Using cold eggs can affect the blending process. Make sure they’re at room temperature.
- Not properly greasing the pan can lead to sticking. Use parchment paper for a foolproof release.
Storing Tips & Timelines
To keep your Marshmallow Toffee Blondies fresh and delicious, consider the following storage tips:
- Store blondies in an airtight container at room temperature for up to 3-5 days.
- For longer storage, wrap individual blondies in plastic wrap and freeze for up to 3 months.
- Thaw frozen blondies overnight in the refrigerator or at room temperature for a few hours.
- Reheat in the microwave for a few seconds for that fresh-out-of-the-oven taste.
Common Questions
Can I use brown sugar substitutes?
Yes, you can use coconut sugar or other brown sugar alternatives, but the flavor and texture may vary slightly.
What can I use instead of toffee bits?
You can substitute toffee bits with chopped up chocolate-covered toffee candies or even butterscotch chips for a different flavor.
Are these blondies gluten-free?
To make gluten-free blondies, simply replace all-purpose flour with a 1:1 gluten-free flour blend.
Can I add more mix-ins?
Absolutely! Feel free to get creative with your favorite mix-ins, such as dried fruits, different types of chocolates, or even cookie dough pieces.
If you enjoyed these Marshmallow Toffee Blondies, check out these other delicious recipes:
The Last Word
There’s something undeniably comforting about biting into a warm, gooey blondie filled with marshmallows and toffee. These Marshmallow Toffee Blondies are not only a treat for the taste buds but also a joy to make. With their rich flavors and chewy texture, they’re sure to become a staple in your dessert repertoire. Whether you’re baking for a special occasion or just to satisfy a sweet craving, these blondies will not disappoint. So gather your ingredients, preheat that oven, and get ready to enjoy a slice of bliss!

Marshmallow Toffee Blondies
Equipment
- 9x13 inch baking pan
- Mixing Bowls
- Whisk
- Spatula
- Measuring cups and spoons
- Oven mitts
Ingredients
- 2 1/4 cups Kroger all-purpose flour
- 1 teaspoon sea salt
- 1/2 teaspoon baking soda
- 1 1/2 cups packed Kroger light brown sugar
- 12 tablespoons butter melted and slightly cooled
- 2 large Kroger eggs at room temperature
- 2 teaspoons pure vanilla extract
- 1 1/4 cups Kroger mini marshmallows
- 1 1/4 cups semi-sweet chocolate chips
- 1 cup toffee bits or chopped Heath or Skor candy bars
- Sea salt for sprinkling on blondies
Instructions
- Preheat your oven to 350°F (175°C) and grease your 9x13-inch baking pan or line it with parchment paper for easy removal.
- In a medium mixing bowl, whisk together the flour, sea salt, and baking soda until well combined. Set this mixture aside.
- In a large bowl, combine the melted butter and brown sugar. Stir until the mixture is smooth and well blended. Add the eggs one at a time, mixing well after each addition. Then stir in the vanilla extract.
- Gradually add the dry ingredient mixture to the wet ingredients, folding until just combined. Be careful not to overmix, as this could lead to dense blondies.
- Gently fold in the mini marshmallows, semi-sweet chocolate chips, and toffee bits.
- Pour the batter into the prepared baking pan, smoothing the top with a spatula. Give it a gentle shake to level it out.
- Bake in the preheated oven for about 25-30 minutes, or until the edges are golden brown and a toothpick inserted into the center comes out with a few moist crumbs.
- Once baked, remove the blondies from the oven and let them cool in the pan for about 10 minutes. Then, sprinkle a little sea salt on top for an extra flavor boost.
- After the blondies have cooled completely, cut them into squares and serve.
Notes
- Do not overmix the batter to keep blondies soft and chewy.
- Let the melted butter cool before mixing to prevent scrambling the eggs.
- Use parchment paper in the pan to ensure easy removal and prevent sticking.
- Add nuts or swap chocolate types to customize the blondies.
- Store in an airtight container at room temperature for 3-5 days or freeze for longer storage.
