Preheat oven to 400°F If you have a convection oven set it use that setting. If you have conventional, it will still work! Still set the oven to 400°F
Wash, Peel and Cut the potatoes. I cut mine into 1.5" cubes.
Peel and finely dice the garlic.
Mix the water, oil, lemon juice, cornmeal, oregano and garlic together.
On a large baking sheet lined with a silicone mat place the potatoes in a single layer. Pour the sauce over the potatoes and stir to mix. Make sure you leave the potatoes in a dingle layer and bonus points if they aren't touching each other.
Bake for 30 Minutes or until tender. The time will vary based on the exact thickness of the potatoes.
While the potatoes are cooking chop up the parsley and red onion.
Toss the potatoes with salt and then Top Cooked potatoes with parsley, red onion and feta cheese.