These Marshmallow Hot Cocoa Surprise Cookies are a delightful treat combining rich cocoa flavors with a gooey marshmallow center and a decadent chocolate drizzle. Perfect for cozying up on chilly days, these cookies feature a thick, sticky dough enriched with a blend of cocoa powders and hot cocoa mix, chilled to perfection, then baked to soft, chewy goodness with melted marshmallows pressed on top and finished with a smooth, melted semi-sweet chocolate drizzle.