01 -
Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper.
02 -
In a bowl, whisk together flour, baking soda, and salt. Set aside.
03 -
In a large bowl, cream together softened butter, granulated sugar, and brown sugar until light and fluffy.
04 -
Beat in the egg and vanilla extract until well combined.
05 -
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
06 -
Gently fold in Lucky Charms marshmallows and chocolate chips if using.
07 -
Scoop tablespoon-sized balls of dough onto the prepared baking sheet, spacing them about 2 inches apart.
08 -
Bake for 10-12 minutes, or until the edges are golden and the centers are set.
09 -
Allow the cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.