Marshmallow Butterscotch Blondies Recipe

I absolutely love sharing this Marshmallow Butterscotch Blondies Recipe with anyone who enjoys a sweet treat with a twist. These blondies have such a delightful combination of rich butterscotch morsels and gooey marshmallows that create a warm, comforting taste in every bite. The texture is perfectly chewy with just the right amount of softness, which makes these blondies impossible to resist once you try them. It’s a recipe I go back to again and again because it never fails to impress.

Why You'll Love This Marshmallow Butterscotch Blondies Recipe

From the moment I took the first bite of these blondies, I was hooked by their wonderfully rich butterscotch flavor mingling with the sweet, fluffy marshmallows throughout. The brown sugar and butter create this deep, caramel undertone that just melts in your mouth, while the marshmallows add unexpected pockets of gooey delight that elevate the whole experience. I appreciate how the butterscotch morsels lend a subtle crunch and creaminess that contrasts beautifully with the soft, cake-like texture of the blondies.

Another thing I love about this Marshmallow Butterscotch Blondies Recipe is how straightforward it is to make. The ingredients are simple pantry staples, and the method is so approachable—even on a busy day, I can whip these up without any stress. Because the mix of flavors and textures is so unique yet comforting, I find these blondies perfect for a variety of occasions: family gatherings, holiday parties, or just a cozy weekend dessert. They stand out effortlessly, and I find they bring smiles to anyone who tastes them.

Ingredients You'll Need

This recipe relies on simple, essential ingredients that come together to create the rich flavor and perfect texture of these blondies. Each component is thoughtfully chosen to build layers of taste, from buttery sweetness to melty pockets of marshmallow softness.

• 2 cups all-purpose flour: This is the base for structure in the blondies, giving them a tender yet firm crumb.
• ¾ tsp. baking powder: Helps give a slight rise so the blondies aren’t too dense.
• ¼ tsp. baking soda: Works alongside the baking powder to ensure light fluffiness.
• ½ tsp. kosher salt: Balances sweetness and enhances the flavor depth.
• ¾ cup unsalted butter (1 ½ sticks): Adds richness and moisture to the blondies.
• 1 cup light brown sugar (firmly packed): Contributes chewy texture and caramel notes.
• ½ cup granulated sugar: Provides sweetness and lightness to the batter.
• 2 large eggs: Bind everything together and add softness.
• 2 tsp. vanilla extract: Brings a warm, inviting aroma and flavor.
• 1 cup butterscotch morsels (plus extra for sprinkling): The star ingredient giving bursts of sweet butterscotch flavor.
• 15 large marshmallows (sliced in half): Melt into gooey pockets that contrast delightfully with the crumb.

Directions

Step 1: Preheat your oven to 350 degrees Fahrenheit. Grab an 8x8 baking pan and spray it generously with nonstick cooking spray to make sure your blondies will release easily after baking. Set the pan aside while you prepare the batter.

Step 2: In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and kosher salt. This dry mix will come together with the wet ingredients to give structure and just the right lift.

Step 3: Using a stand mixer fitted with a paddle attachment, cream the unsalted butter, light brown sugar, and granulated sugar together on medium-high speed until the mixture is light and fluffy. This step is key to creating that tender, chewy texture we love.

Step 4: Reduce the mixer speed to low, then add the eggs one at a time, mixing well after each addition. After the eggs are fully incorporated, pour in the vanilla extract and mix briefly until combined for that warm, aromatic base flavor.

Step 5: Slowly add the dry ingredients to the wet ingredients, mixing just until everything is incorporated. Avoid overmixing to keep the blondies from getting tough.

Step 6: Gently fold in the butterscotch morsels and the halved marshmallows so that they are evenly distributed throughout the batter. This ensures every bite has a little burst of those sweet surprises.

Step 7: Press the blondie batter evenly into your prepared baking pan. Make sure the surface is smooth and uniform so it bakes evenly.

Step 8: Bake in the preheated oven for about 45 minutes, or until the edges are set and the top turns a lovely light brown. The center should be firm but still soft. Let the blondies cool completely in the pan before slicing to keep the gooey pockets intact.

Servings and Timing

This recipe yields about 16 generous servings, perfect for sharing with a crowd or saving some for later indulgence. The prep time is roughly 15 minutes, which includes mixing and getting your batter ready. Baking takes about 45 minutes, and after that, you’ll want to let the blondies cool completely, which generally takes another 15–20 minutes. Altogether, plan for about an hour from start to finish, with most of that time spent baking and cooling.

How to Serve This Marshmallow Butterscotch Blondies Recipe

When I serve these blondies, I love to keep it simple to highlight their delicious flavors. They’re perfect on their own, but for a little extra flair, I sometimes sprinkle a few extra butterscotch morsels on top just before baking to create an enticing, slightly crunchy topping. Presentation-wise, cutting them into squares and stacking them on a pretty platter always gets plenty of oohs and aahs.

For accompaniments, I find a scoop of vanilla ice cream or a dollop of whipped cream transforms these blondies into a special dessert experience—especially if you warm the blondies slightly so the marshmallows and butterscotch get even gooier. They also pair wonderfully with a hot cup of coffee or a glass of cold milk, which balances the sweetness perfectly.

I recommend serving these blondies at room temperature or warm; chilling tends to dull the gooey textures that make them so special. They’re fabulous treats for holiday gatherings, potlucks, or weekend family dinners where you want to impress with minimal effort. The portions are generous enough to satisfy, but small enough that everyone can enjoy a couple of squares.

Variations

I love experimenting with this Marshmallow Butterscotch Blondies Recipe to make it fit different preferences or occasions. For example, if you want to transform these into a gluten-free treat, I’ve had success swapping the all-purpose flour for a gluten-free baking mix without changing much else. The texture remains wonderful, and the flavor shines through just as beautifully.

If you’re vegan or dairy-free, you can substitute the butter with a plant-based margarine and replace the eggs with flax eggs or applesauce. The butterscotch morsels and marshmallows may require special vegan versions, but those are available at many specialty stores or online. The result is slightly different but equally delicious, with the sweet butterscotch and marshmallow notes still front and center.

For some fun flavor twists, I’ve also tried adding chopped nuts like pecans or walnuts for added crunch, or swapping the butterscotch morsels with white chocolate chips for a creamier sweetness. Another idea is to sprinkle cinnamon or pumpkin pie spice on top right before baking to add a warming spice note, especially nice in cooler months.

Storage and Reheating

Storing Leftovers

To keep your Marshmallow Butterscotch Blondies fresh, I store leftovers in an airtight container at room temperature. They stay moist and chewy for up to 4 days this way. If you want to keep them longer, placing a sheet of parchment paper between layers helps prevent sticking and preserve the gooey marshmallow texture.

Freezing

These blondies freeze beautifully, which makes them a great make-ahead dessert. To freeze, cut them into squares first, then arrange them in a single layer on a baking sheet to flash freeze for about an hour. Once firm, transfer the squares into a resealable freezer bag or airtight container. They’ll keep well frozen for up to 3 months. When you’re ready to enjoy them, simply thaw at room temperature.

Reheating

When reheating, I recommend warming the blondies gently in a microwave for about 15-20 seconds or in a low oven around 300 degrees Fahrenheit for 5-7 minutes. This helps restore their gooey texture, especially the marshmallows. Avoid overheating as this can dry them out or cause the butterscotch to lose its smooth creaminess. If reheating from frozen, let them thaw fully first for the best results.

FAQs

Can I use mini marshmallows instead of large ones?

Absolutely! Mini marshmallows work just fine in this recipe. They’ll melt into smaller pockets of gooey sweetness, which can actually be a nice way to distribute the marshmallow flavor more evenly throughout the blondies.

What type of pan works best for baking these blondies?

An 8x8 inch square baking pan is ideal for this recipe. It gives the blondies a nice thickness and ensures even baking. You can use metal, glass, or ceramic pans—just make sure to adjust the baking time slightly if your pan is significantly different in size or material.

Can I substitute the butterscotch morsels with chocolate chips?

Yes! Using chocolate chips instead of butterscotch morsels will give your blondies a decadent chocolate twist. Semi-sweet or milk chocolate chips both work well and complement the marshmallows beautifully.

How do I know when the blondies are done baking?

Look for edges that are set and a top that turns lightly golden brown. The center should be firm to the touch but still soft. A toothpick inserted near the center will come out with just a few moist crumbs—not wet batter.

Is it okay if I overmix the batter a little?

It's best to mix just until the dry ingredients are incorporated to avoid tough blondies. However, a little extra mixing won’t ruin the batch completely; just expect a slightly denser texture. I always try to mix gently and stop as soon as everything is combined.

Conclusion

I hope you feel inspired to bake this Marshmallow Butterscotch Blondies Recipe because it’s truly one of my all-time favorites to share and enjoy. The delightful blend of sweet butterscotch and melty marshmallows bakes up into golden squares of pure happiness that bring comfort and joy to any occasion. Give this recipe a try—I promise you’ll fall in love just like I did!

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