Preparation Steps

• Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
• In a medium bowl, whisk together the flour, baking soda, and salt.
• In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
• Beat in the eggs one at a time, then stir in the vanilla extract.
• Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix.
• Gently fold in the chocolate chips, mini marshmallows, and chopped nuts.
• Drop rounded tablespoons of dough onto the prepared baking sheets, leaving about 2 inches between cookies.
• Bake for 9-11 minutes, or until the edges are lightly golden brown and the centers are still slightly soft. The marshmallows may puff up and slightly brown.
• Let the cookies cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely.