These fudgy, gooey s'mores brownies are as easy to make as they are impressive! Use my one-bowl brownie recipe, combined with a layer of graham crackers and marshmallows, for the perfect summer dessert!
June Baking Challenge Recipe! This is the June 2024 baking challenge recipe! Make these brownies & leave a review on this post to be entered to win prizes!
Save this Recipe!
Enter your email and I'll send this recipe to you.
Why I Love These S'more Brownies
- One bowl recipe: These s'more brownies use my better-than-box fudgy brownies, which is the EASIEST and tastiest homemade brownie recipe.
- Ooey, gooey, and fudgy: Enough said.
- Perfect for summer! These make the best potluck dessert, as there's no refrigeration needed!
Ingredient Notes & Substitutions
- Homemade Brownie Mix: While you could make these with boxed brownies, my homemade brownie mix takes them to the next level!
- Chocolate chips: I used milk chocolate chips for that s'mores flavor, but you can use semi-sweet chips or dark chocolate chunks!
- Marshmallows: I like using large marshmallows since they're easier to press into the brownies (and have them stick), but you can also use mini marshmallows.
- Graham crackers: The layer of graham crackers on the bottom adds crunch and a sweet and salty flavor.
How to Make S'more Brownies
Step 1: Make Brownie Batter
Whisk together dry ingredients in large bowl. Add wet ingredients and mix with the whisk until just incorporated; batter will be thick.
Step 2: Scoop Into Pan & Bake
- Step 1: Line a 9x9" light-colored aluminum metal pan with parchment paper, then cover the bottom with a layer of graham crackers.
- Step 2: Scoop batter into dollops on top of graham crackers and carefully spread to the edges.
- Step 3: Top with extra chocolate chips, then bake at 325℉ for 36-40 minutes, or until brownies are 90% baked through. If you're using a 9x13 pan, bake for 24-26 minutes.
Step 3: Press on Marshmallows & Toast
- Remove the brownies from the oven and press the marshmallow halves into the top, gently pressing them into the brownies (this will help so that they don't slide off later). Brownies will feel a little jiggly & raw. Sprinkle on extra chocolate chips. Place back in the oven for 6-8 minutes or until marshmallows are puffy and very lightly brown.
- To finish them off & get the toasted color, broil on low until lightly toasted brown (this may only take 30 seconds!). You MUST watch the oven the entire time or your marshmallows will burn FAST - trust me!!!!
Step 4: Cool & Cut
Remove from the oven and allow to full cool before cutting.
Tip: While gooey treats can get messy to cut, wiping your knife off between each cut can help you achieve clean cuts.
Tips & Variations
- Bake through: It's important that your brownies are 90% baked through before topping them with marshmallows, or else they will not be able to finish baking.
- Don't skip the parchment: This will help you easily lift the cooled bars out of the pan, making them easier to cut.
Storage & Freezing
- Storage: Store in an airtight container for 3-4 days. The brownies get even fudgier on Day 2!
- Freezing: I don't recommend freezing these after putting on the marshmallows or they'll become sticky.
Frequently Asked Questions:
Yes! For a 9x9" pan, you'll need a little less than a 16-ounce bag. For a 9x13" pan, you'll use the entire 16-ounce bag.
Sure! Because the graham crackers are on the bottom, add a few minutes to the box baking time.
Looking for more easy summer recipes?
Did you make this recipe? If so, will you do me a huge favor and leave a review and rating letting me know how you liked this recipe? This helps my small business thrive so I can continue providing free recipes and high-quality content for you.
S'more Brownies
Ingredients
Homemade Brownies:
- 1 ¼ cups granulated sugar
- ½ cup powdered sugar
- ¾ cups all-purpose flour
- ¾ cups unsweetened cocoa powder I've tested these with Hershey's & Target's Good & Gather brand
- 1 teaspoon kosher salt
- ½ teaspoon baking powder (not baking soda!)
- 1 tablespoon cornstarch
- 1 teaspoon espresso powder (totally optional!)
- ¾ cup semi-sweet chocolate chips or chunks
- ½ cup vegetable oil
- ¼ cups warm water
- 2 large eggs
- 1 teaspoon vanilla extract
Crust & Topping
- 16 graham cracker squares
- ½ cup semi-sweet chocolate chips or chunks, divided
- 18 large marshmallows, halved
Before you begin! If you make this, will you do me a huge favor and leave a review and rating letting me know how you liked this recipe? This helps my small business thrive so I can continue providing free recipes and high-quality content for you.
Instructions
- Whisk together dry brownie ingredients in large bowl. Add wet ingredients and mix with the whisk until just incorporated; batter will be thick.
- Line a 9x9" light-colored aluminum metal pan with parchment paper, then cover the bottom with a layer of graham crackers (14 squares). Spoon batter into dollops on top of graham crackers and carefully spread to the edges.
- Top with ¼ cup extra chocolate chips, then bake at 325℉ for 36-40 minutes, or until center 90% baked through. If you're using a 9x13 pan, bake for 24-26 minutes.Do not turn off the oven yet!
- Remove the brownies from the oven and immediately press the marshmallow halves into the top, gently pressing them into the brownies (this will help so that they don't slide off later). Brownies will feel a little jiggly & raw. Sprinkle on remaining ¼ cup chocolate chips.
- Place back in the oven for 6-8 minutes or until marshmallows are puffy and very lightly brown.
- To finish them off & get the toasted color, broil on low until lightly toasted brown (this may only take 30 seconds!). You MUST watch the oven the entire time or your marshmallows will burn FAST - trust me!!!!
- Remove from the oven and allow to full cool before cutting. While gooey treats can get messy to cut, wiping your knife off between each cut can help you achieve clean cuts.
Last Step! Please leave a review and rating letting me know how you liked this recipe! This helps my small business thrive so I can continue providing free recipes and high-quality content for you.
Notes
- Storage: Store in an airtight container for 3-4 days. The brownies get even fudgier on Day 2!
- Freezing: I don't recommend freezing these after putting on the marshmallows or they'll become sticky.
These were so amazing and such a hit that I made them twice in one weekend! I made them with and without vanilla extract, they turned out great both times. Also tried with a square Goldtouch pan, it worked the same as a regular aluminum pan. Definitely heed the warning to watch closely when you broil: my chocolate started to burn within a couple of seconds of getting that perfect golden brown color on the marshmallows.
Yay, that makes me so happy to hear you enjoyed this recipe so much, Ella! Thank you so much for leaving a review, I really appreciate it!
These are AMAZING!!! I ended up making them with dark chocolate chunks instead of semi-sweet because that’s all Target had lol, but y’all 🤤 they’re so good! I also subbed in applesauce for eggs and they turned out great. Really easy to make and I’ll absolutely make them again. The perfect summer treat!! I gifted them to my baristas at my local coffee shop and they were so excited!
So happy to hear you enjoyed this recipe, Kellie! Thank you so much for taking the time to leave such a great review, I really appreciate it!
I couldn't use Graham Crackers due to living in Australia, so I used digestive biscuits and ground them up, as a biscuit base, with melted butter, sugar and a pinch of salt. This recipe turned out amazing! The whole household loved it and something they want to be made again.
Recipe came out great! My kiddos loved it! Question - if you make it in 9x12" pan, do you just double the recipe? I thought I read through everything, but didn't see that.
So glad you loved it! If you make it in a 9x13" pan, they'll be a little thinner (I have the baking times in the recipe card for that!). If you want to make them as thick as the 9x9" pan, I suggest 1.5x the recipe!
I didn't see you had replied!! Thank you. If I 1.5 the recipe, you think the same baking time for brownies or longer?
Probably about the same!
Hi,
What would be a great alternative to Graham Crackers?
Unfortunately, we don't get them in Australia.
Would it work with a cookie crumb base instead?
Biscoff cookies could be fun or a cookie crumb would also totally work!
So easy to make and sooooooo good.
Thank you so much for leaving a review, Victor!
Found your recipe from Instagram and had to try it! Very delicious and easy to make!!
So glad you tried it out and enjoyed it, Sophie! Thank you so much for leaving a review!
I’m from the june baking challenge and these brownies are SO GOOD. I subsituted the cocoa powder for dark cocoa powder to make it less sweet and it was incredible! super gooey and yummy:)
So glad to hear you enjoyed this recipe, Anna! Thank you so much for leaving a review!
Made as part of the June baking challenge-super tasty!
Thank you so much for leaving a review, Alison!