S’mores Blondies

I first made this crowd-pleasing dessert for our last summer beach day and sunset before the start of school. I’ve already made them again! Insanely delicious.

The bars are not overly sweet and they have an amazing texture. I weighed the dry ingredients to ensure perfection. This recipe was adapted from The New York Times, contributed by Erin Jeanne McDowell. I modified the method. Fabulous!!

Yield: 24 blondies
  • nonstick cooking oil spray
  • 9 whole graham crackers (about 135 grams), or store-bought graham cracker crumbs (about 1 cup)
  • 1 ¼ cups/160 grams all-purpose flour
  • 1 ¼ teaspoons baking powder
  • 1 teaspoon fine sea salt
  • 1 cup/225 grams unsalted butter (2 sticks), at room temperature
  • 1 packed cup/220 grams dark brown sugar
  • ½ cup/100 grams granulated sugar
  • 2 large eggs, at room temperature
  • 1 tablespoon vanilla extract
  • 8 ounces/225 grams bittersweet chocolate, coarsely chopped into chunks (I used 78% cacao Lindt)
  • 2 ½ cups/150 grams mini marshmallows
  1. Heat oven to 350 degrees, preferably on convection, and arrange oven racks in the upper and lower thirds of the oven.
  2. Coat the inside of a 9-by-13-inch pan with nonstick spray and line it with parchment paper, leaving 2 inches of excess parchment on the long sides of the pan. (The excess will help you pull the blondies out later.)
  3. If using whole graham crackers, add them to the bowl of a food processor and pulse until they form a fine powder. Alternately, you could put the crackers in a large resealable plastic bag and crush them using a rolling pin, then add them to the bowl. If using store-bought crumbs, add them directly to the food processor.
  4. Add the flour, baking powder and salt to the crumbs, and pulse a few times to combine.
  5. In the bowl of an electric mixer fitted with the paddle attachment, cream the butter, brown sugar and granulated sugar on medium speed until light and fluffy, 4 to 5 minutes.
  6. Add the eggs one at a time and mix on medium speed until well incorporated, scraping the sides of the bowl after each addition.
  7. Add the vanilla and mix to combine.
  8. Turn the mixer to low and add the graham crumb mixture and mix just to combine.
  9. Add about ¾ of the chocolate to the mixer and mix to incorporate.
  10. Transfer the dough to the prepared pan. Use damp hands or a small offset spatula to press the dough into an even layer.
  11. Bake on the lower rack until the bars are golden at the edges and the surface has a crackly appearance, 25 minutes on convection or about 30 minutes in a standard oven.
  12. Remove the pan from the oven and sprinkle the marshmallows evenly over the surface. Sprinkle the reserved chocolate on top of the marshmallows and return the pan to the top rack of the oven.
  13. Bake until the marshmallows have softened and are lightly toasted and the chocolate is melted and gooey, 10 to 14 minutes.
  14. Remove the pan from the oven. If any of the marshmallows have puffed up, use a toothpick or skewer to puncture them; they will deflate easily.
  15. Transfer the pan to a wire rack and let cool, 45 minutes.
  16. Using a thin knife, slide the blade between the blondies and the pan on the short sides of the pan, then use the parchment sling to carefully remove the blondies.
  17. Let cool another 10 minutes, then slice into 24 even pieces and serve.

About Josette@thebrookcook

I live in Stony Brook, New York on Long Island. I love garlic and baking. My hobby (and love) is to try new recipes. My favorite recipe resources include The New York Times, Food and Wine, Bon Appetit, and Martha Stewart Living. Enjoy!

6 responses to “S’mores Blondies

  1. Kelly Freeman

    Yes, very yummy!!!! I was waiting for this post!

  2. Those blondies look good. Thanks for sharing your recipe.

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