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Heat oven to 375 degrees.
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In a mixer, combine the butter and both sugars.
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Mix in the egg and vanilla until well combined.
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In another bowl, combine the flour, graham cracker crumbs, salt, and baking soda. Add to the mixer and mix well.
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Place dough balls on cookie sheet covered with parchment paper.
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Bake for about 8 minutes.
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Remove from oven and press chocolate chunks and marshmallows into the cookies.
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Place back into the oven for an additional 3 to 4 minutes.
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Let cool.