01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
03 - In a large bowl, beat the softened butter, granulated sugar, and brown sugar together until light and creamy, about 2 minutes.
04 - Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
05 - Gradually add the dry ingredients to the wet mixture, mixing until just combined.
06 - Fold in the chocolate chips and 1 cup of mini marshmallows, reserving the remaining 1/2 cup of marshmallows.
07 - Scoop heaping tablespoons of dough onto the prepared baking sheets, spacing them about 2 inches apart.
08 - Press a few reserved marshmallows into the tops of each cookie dough mound.
09 - Bake for 10-12 minutes, or until cookies are golden around the edges but still soft in the center.
10 - For a toasted marshmallow finish, broil the cookies for 1-2 minutes, watching carefully, until the marshmallows are golden and toasted.
11 - Cool on the baking sheets for 5 minutes, then transfer to a wire rack to cool completely.