With both graham “flour” (a.k.a.finely ground graham crackers) and chopped chocolate added to the batter, these bars are wildly delicious even before they’re topped with marshmallows and more chocolate and broiled until bronzed and melty.And don’t be surprised if you start adding graham cracker crumbs to blondies from now on, as the nutty, honey-flavored, vanilla-forward crackers bring so much to the blondie table.

S'mores Blondies   Makes 18 to 24 blondies Ingredients 1 3⁄4 cups (385 grams) firmly packed light brown sugar 1 cup (227 grams) unsalted butter, melted and cooled 1 tablespoon (13 grams) vanilla extract 2 large eggs (100 grams) 1 teaspoon (5 grams) baking powder 1 1⁄4 teaspoons (3.75 grams) kosher salt 1 1⁄2 cups (195 grams) finely ground graham cracker crumbs (about 1 1⁄2 sleeves) 1 cup (125 grams) all-purpose flour 6 ounces (170 grams) milk or semisweet chocolate, coarsely chopped and divided 2 cups (90 grams) mini marshmallows Instructions Preheat oven to 350°F (180°C).Spray a 13x9-inch baking pan with cooking spray.Line pan with parchment paper, letting excess extend over sides of pan.

In a large bowl, whisk together brown sugar, melted butter, and vanilla for 30 seconds.Add eggs, one at a time, whisking until combined after each addition.Sprinkle baking powder onto mixture, and vigorously whisk unti

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