Majestic Potatoes Au Gratin

Recipe by Rita1652
READY IN: 1hr 5mins




  • Preheat oven to 375.
  • Oil bottom of a casserole pan.
  • Melt butter in microwave oven. Mix in flour and then whisk in milk. Microwave 2 minute to slightly thicken. Stir in nutmeg, pepper flakes. Set aside.
  • Place the white and purple sliced potatoes into separate bowls.
  • Mix half of the red onion and garlic with each of the potatoes. Drizzle with olive oil just to coat and sprinkle with seasoned salt to taste and black pepper.
  • Toss to separate the slices and coat them with the oil and seasonings.
  • Layer half of the purple potatoes in the casserole dish then place 1/4 of the cheese over the layer of purple potatoes; layer 1/2 the white potatoes over the layer of cheese then top with 1/4 of the cheese. Repeat with remaining potatoes and cheese.
  • Pour the white sauce over the potatoes and using a knife help it into the layers.
  • Mix the panko and Parmesan cheese together and then sprinkle on top of the sauce.
  • Bake for 45-60 minutes.