I picked up three for $1.19. They're also available as part of the new McPick 2 value menu.
Someone mentioned in the comments when I first wrote about these that they're baked rather than fried. Having tried them, they do indeed seem baked; although they might have been fried prior to being frozen. They're lightly crispy but didn't have that slightly greasy crunch.
Unfortunately, the cheese was more warmed than hot and didn't get close to mustering that gooey, stretchy goodness that all mozzarella sticks should deliver. I don't know if it's because they don't heat it enough, if they just hold it at too low a temperature, or if they're just afraid of people singeing their tongues, but it was disappointing.
Overall, McDonald's Mozzarella Sticks were a miss for me simply because the cheese wasn't melted. Just apply more heat please.
Nutritional Info - McDonald's Mozzarella Sticks - 3 pieces (65g)
Calories - 200 (Calories from Fat - 90)
Fat - 10g (Saturated Fat - 4g)
Sodium - 560mg
Carbs - 18g (Sugar - 1g)
Protein - 9g