Preheat oven to 425 degrees and lightly grease a baking sheet.
Slice polenta in rounds, and then quarter each round.
Place evenly on the baking sheet
Brush croutons lightly with olive oil.
Sprinkle salt, pepper, and garlic powder over the croutons, flip and sprinkle the other side.
Bake for about 15 minutes. Sprinkle with parmesan cheese and bake for another 5-10 minutes or until golden brown.