To top the cookies: additional chopped walnuts and chocolate chips
Preheat the oven to 350º F and line a baking sheet with parchment paper or silicone baking liner.
In a small bowl, whisk together the flour, cocoa powder, baking soda, and salt. Set aside.
In a mixing bowl, beat the softened butter and brown sugar with an electric mixer for 1 minute. Add the egg and vanilla extract, beat just until combined.
Gradually add the dry ingredients to the wet ingredients, using mixer or wooden spoon, being careful to not over-mix.
By hand, carefully stir in the walnuts and chocolate morsels into the dough. The batter will be thick.
Use a cookie scoop to drop dough balls onto lined baking sheet. Press 3-4 mini marshmallows into each cookie. If desired, press additional walnut pieces and chocolate chips into the outside of the dough balls.
Bake for 10-12 minutes.
Allow the cookies to cool to the touch on the baking sheet (about 5 minutes), before moving them to a cooling rack.
I'm a huge Gilmore Girls fan. In a Season One episode, Sookie made rocky road cookies for Rory to give to her boyfriend Dean and he loved them. I've made my own version of Sookie's Rocky Road Cookies. Much like rocky road ice cream, these cookies are chocolaty, nutty, marshmallow-ey, and oh-so decadent. They're also super simple to make. Basically, these Gilmore Girls-inspired Rocky Road Cookies are sweet and gooey and crunchy - everything you want in a cookie recipe. I know you're going to love them!
Recipe by About a Mom at https://www.aboutamom.com/sookie-rocky-road-cookies-recipe-gilmore-girls/