INGREDIENTS
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1/2 cup unsalted butter, cut up
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4 oz. unsweetened chocolate, chopped
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1 1/2 cups sugar
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1 tablespoon unsweetened cocoa
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3 eggs
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1 1/2 teaspoons vanilla extract
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1 cup all-purpose flour
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1 cup milk chocolate chips
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1/2 cup chopped walnuts
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1 cup mini marshmallows