INGREDIENTS
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1/2 cup butter, at room temperature
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1/2 cup brown sugar
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1 egg, at room temperature
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1 tsp vanilla
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1 1/4 cup flour
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1/2 tsp baking soda
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1/2 tsp salt
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Topping:
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1 cup mini marshmallows
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2/3 cup of chocolate chips
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2 rectangles of graham crackers