Preheat oven to 350 degrees. Cream butter and sugars together with a mixer until well combined. Beat in eggs and vanilla.
In a separate bowl mix the flour, salt and baking soda. Slowly add to wet ingredients along with chocolate chips until just combined. Using a cookie scoop take one scoop of cookie dough and place on top of an Oreo Cookie. Take another scoop of dough and place on bottom of Oreo cookie. Seal edges together by pressing and cupping in hand until Oreo cookie is enclosed with dough. Place onto a parchment or silpat lined baking sheet and bake cookies 9-13 minutes or until golden brown. Let cool for 5 minutes before transferring to cooling rack.
Makes about 2 dozen VERY LARGE cookies.