Boil the potatoes until tender. Drain.
In a large bowl mix together the egg, salt & pepper, garlic, rosemary, and Parmesan cheese. Spoon out 15 equally sized balls (I used a scoop).
Flour a plate or dish and roll the potato balls between your palms to make a cylinder shape. Lay on the plate. Cover and refrigerate at least 30 minutes or until cooled.
Make a breading station:
Bread the croquettes one at time:
Refrigerate the croquettes for another hour.
Preheat oven to 425 degrees F. Spray the croquettes with olive oil spray. Bake in the oven for 30 minutes or until golden brown
