One-Bowl S'mores Blondies

This easy One-Bowl S’mores Blondies recipe combines all your favorite flavors of a classic summer dessert into an easy-to-make treat that's ready in under 1 hour. Enjoy gooey marshmallows, rich creamy chocolate, and crunchy graham crackers with every bite!

Summer means s'mores treats for my family! We love gathering around the fire and toasting marshmallows while we tell stories. It's become a tradition that's much more than just enjoying a tasty treat. Because everyone loves the classic flavor of s’mores, I love trying unique ways to recreate the same taste in different desserts, like s’mores cookies, s’more brownies, or even decadent s’more creme brulee!

Not only did I want to create a new twist on the classic, but I also wanted a dessert that came together quickly and easily. And these one-bowl s’more blondies are just that. They’re mixed together in one bowl, baked, and ready to satisfy your cravings in under one hour.

The Best Chewy Blondies With Cookie Butter

I love cookie butter (a smooth spread made from crushed spiced flavor speculoos cookies). I’ve used it in one-bowl cookies and no-bake truffles. And because it reminds me of the taste of graham crackers, I found that cookie butter was the perfect ingredient to mix into the blondie batter.

These s'mores blondies are slightly crunchy on the edges, with gooey centers that are loaded with all the mouth-watering flavors of classic s’mores. You can enjoy them on their own, or what I like to do is serve them slightly warm with a scoop of vanilla ice cream or s’mores ice cream!

Ingredients You'll Need

• Melted Unsalted Butter - Adds moisture and a rich flavor to the blondies, making them soft and tender. You can omit the salt from the recipe if you use salted butter.
• Brown Sugar - I prefer brown sugar to granulated sugar because it creates a chewier texture with a hint of caramel-like flavor. You can use light or dark brown sugar.
• Cookie Butter Spread - You could also swap it with your favorite nut butter (I’ve made them with peanut butter, and it’s delicious too!)
• Eggs - I always use large eggs for all my recipes. Make sure you’re using room temperature eggs.
• Pure Vanilla Extract - Adds a light depth and warmth to the blondies.  
• All-Purpose Flour - Creates structure for the blondies, keeping them soft and tender but sturdy enough to be sliced properly.
• Graham Cracker Crumbs - I like making my own by adding graham crackers into a resealable bag and banging them with a rolling pin until fine crumbs form.
• Leavening Agents (baking powder and baking soda) - Help the blondies rise, making them light, fluffy, and not too dense.  
• Salt - Balances the sweetness of the blondies. Fine-grain sea salt is my go-to.  
• Semi-Sweet Chocolate Chips - Use a high-quality brand for the best flavor. You can also swap chopped chocolate (I like to use a semi-sweet baking bar).
• Marshmallow Creme - Creates gooey marshmallow swirls throughout the blondies.
• Broken Graham Crackers - Add on top of the batter before baking, they add an extra layer of crunch and flavor.

How To Make S'mores Blondies

Before you begin: Preheat the oven to 350°F/177°C.  Line an 8×8-inch baking pan with parchment paper so that it hangs over the sides. Read the recipe from start to finish.

Combine wet ingredients: Whisk the butter and brown sugar until fully combined. Stir in the peanut butter until fully incorporated, followed by the eggs and vanilla. 

Add dry ingredients: Using a rubber spatula, gently fold in the all-purpose flour, graham cracker crumbs, baking powder, baking soda, and salt. Then fold in the chocolate chips until evenly distributed.

Layer the blondies: Start by pressing half of the batter into the prepared baking pan. Drop dollops of marshmallow creme over the batter. Spread the remaining batter on top, and gently press the chopped graham crackers on top.

Bake and cool: Bake in a preheated oven for 25-28 minutes. When finished, the blondies will be lightly browned on the edges and pulled away from the parchment paper. Place on a wire rack to cool.

Best Baking Pan For Blondies

While this recipe uses an 8x8 baking pan, you can change up the size and thickness of your dessert by using other sizes of baking pans, including a 9x9, which will make the blondies slightly thinner. A 9x13 pan is best if you would like to double the recipe.

For best results, use an aluminum pan. If you have a dark-coated pan, the blondies will bake faster, so reduce the oven temperature to 325°F/163°C.

Don't Forget These Tips For The Perfect Blondies

It doesn’t take much to make this recipe, but following these four tips will ensure you have the best tasting s'mores blondies with the perfect texture.

• Measure ingredients by weight. Using a digital kitchen scale will give you the most consistent results. Plus, you can measure your ingredients directly into the bowl as needed (no need to clean up extra bowls!).
• Use high-quality ingredients. Simple pantry ingredients plus classic s’more ingredients are all you need for this one-bowl dessert. Using high-quality butter, chocolate, and vanilla will make all the difference.
• Do not overmix the batter. Mix until just combined or no dry streaks of flour remain. This will ensure a soft and tender texture. A rubber spatula is best for folding everything together without overmixing the ingredients.
• Slice when completely cooled. These blondies need to set before cutting. I know it’s tempting to dig in immediately but trust me, these blondies will slice up nicely once they’re cooled.

Storing & Freezing

Storing: The blondies can be kept in an airtight container at room temperature for up to 5 days. If you prefer them slightly warm, microwave them for 20-30 seconds. 

Freezing: Wrap individual blondie squares tightly in plastic wrap, then place them in a zip-top freezer bag. They can be frozen for up to 3 months. To enjoy, thaw at room temperature for a couple of hours until defrosted.

Recipe FAQ

More Brownies and Blondies You'll Love

• Birthday Cake Blondies
• White Chocolate Chip Brownies
• Brownie Blondies
• One Bowl Brownies

I hope you love these One-Bowl S’mores Blondies as much as we do and that they become a family favorite! Please leave a comment below, I love reading your feedback! And if you’d like to make this recipe later, don’t forget to pin it on Pinterest. Happy Baking!

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