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S'mores brownie skillet topped with marshmallows, more chocolate and graham crackers with serving spoons in the center.
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5 from 3 votes

S'mores Brownie Skillet

You don't need a campfire to enjoy this rich S'mores Brownie Skillet--a treat that will have you wanting s'more! Gooey marshmallows, graham crackers baked right into the brownie and chocolate bars are all part of this fudgy brownie that is best eaten with a spoon! Simple to toss together but won't last long!
Prep Time15 mins
Cook Time20 mins
Total Time40 mins
Course: Dessert
Cuisine: American
Servings: 8
Calories: 362kcal
Author: Lorie Yarro


  • ½ c butter, melted (1 stick--plus more to grease pan.)
  • 1 c sugar
  • ½ c cocoa powder
  • 2 large eggs
  • ½ cup Flour
  • ½ teaspoon baking powder
  • ½ teaspoon sea salt
  • 1 c mini marshmallows plus more for topping
  • 3 sheets graham crackers (4 crackers per sheet), crushed
  • 4.4 oz. Hershey Bar (one XL bar), roughly chopped
  • 1 ½ teaspoon Vanilla


  • Preheat oven to 350°F. In a medium bowl, whisk together eggs, vanilla and melted butter. Add in the sugar and cocoa powder and whisk to combine.
  • Add in the flour, baking powder and sea salt and gently stir until incorporated. Do not over mix in this part. Add the crushed graham crackers, marshmallows, and ⅔ of the chopped chocolate bars.
  • Grease an 8 inch cast iron skillet with butter and pour the batter into the skillet. (if using a baking pan, line with parchment) Bake for 20 - 25 minutes or until the top is just under done and a tooth pick comes out with some moist crumbs on it versus clean. The skillet will bake it a bit more when you remove it from the oven and it will be nice and gooey perfection!
  • Add the rest of the chopped chocolate on top as it will melt slightly. If desired, add more marshmallows and lightly toast them with a kitchen torch or broil for about 1-2 minutes, but keep a really good eye on them. No need to wait very long. Just long enough to grab some spoons and a few scoops of ice cream!


  • As I mentioned, it is not ideal to over mix brownie batter. Once all the dry ingredients have been mixed in, take it easy as possible on the mixing for the best outcome.
  • I use an 8 inch cast iron skillet. These brownies bake to where I like them in about 20-23 minutes. I lean more on the 20 minute side. 
  • If you double or triple the recipe, the cook time may be longer if the pan is only a little bit larger. Just keep an eye on it!
  • If you don't have a cast iron skillet, you can still use an 8 inch or 9 inch baking pan. A baking pan may take slightly longer, so closer to 25 minutes side.


Calories: 362kcal | Carbohydrates: 45g | Protein: 4g | Fat: 20g | Saturated Fat: 12g | Cholesterol: 72mg | Sodium: 207mg | Potassium: 249mg | Fiber: 4g | Sugar: 34g | Vitamin A: 414IU | Calcium: 46mg | Iron: 3mg