Heat the oven to 350°F and line the baking sheet with parchment paper. The sheet should be fully covered so the cookies do not stick.
Place the dough in a bowl and mix in the chocolate chips. Stir until the chips are spread evenly through the dough.
Scoop 12 balls of dough and place them on the baking sheet. Leave space between each one because they will spread.
Bake for 8 to 10 minutes. The edges should look set, but the centers should still look soft.
Remove the cookies from the oven and gently press marshmallow halves into the center of each cookie. The marshmallow should sink slightly into the dough.
Return the cookies to the oven for 1 to 2 minutes. The marshmallows should puff and look soft but not burned.
Melt the drizzle chocolate in the microwave in short bursts, stirring each time. The chocolate should look smooth and pourable.
Spoon the melted chocolate over the cookies. Add crushed peppermint and sprinkles while the chocolate is still wet.
Let the cookies cool on the pan until the chocolate sets. They should feel soft but hold their shape.