INGREDIENTS
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ingredients:
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2 sticks (1 cup/8 oz) softened butter
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1 cup packed light brown sugar
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1/2 cup granulated sugar
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1 egg
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1 tsp vanilla
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2 cups all purpose flour
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1/2 tsp baking soda
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15 large marshmallows, divided
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7 graham cracker rectangles, divided
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12 oz good quality chocolate chunks, reserving 1/4 cup for melting
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1 tbsp canola oil