"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. Make Ahead Tip: Prepare through Step 3; refrigerate for up to 12 hours. Store brownies in an airtight container for up to 2 days...."
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
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Note: Cocoa powder comes in two styles: natural and Dutch-processed. Dutch-processed cocoa has been treated with alkali, or "Dutched," to neutralize the natural acidity of cocoa, while natural has not. For this recipe, we prefer the taste of natural