INGREDIENTS
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9 graham crackers
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1 1/2 cups (3 sticks) butter
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1 1/4 cups unsweetened natural cocoa powder, sifted to remove lumps
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2 1/2 cups granulated sugar
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1/2 teaspoon salt
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5 large eggs
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2 teaspoons vanilla extract
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1 2/3 cups all-purpose flour
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6 graham crackers, broken in half
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8 ounces dark chocolate, coarsely chopped
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3 cups mini marshmallows