"These super-rich brownies made chocolaty with plenty of cocoa powder have less fat than other brownies, but stay extra gooey and good with marshmallows, nuts and chocolate chunks on top...."
INGREDIENTS
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1 cup less 1 tablespoon all-purpose flour
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1/4 teaspoon baking powder
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1/4 teaspoon salt
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4 1/2 tablespoons unsalted butter
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1/2 cup plus 1 tablespoon unsweetened cocoa powder, preferably natural (see Note)
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1 1/4 cups sugar
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1 large egg
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2 large egg whites
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2 teaspoons vanilla extract
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8 regular-size marshmallows
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2/3 cup coarsely chopped walnuts or pecans
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1/3 cup chopped bittersweet or semisweet chocolate or large chocolate chips