Scalloped Potatos Au Gratin with Gruyere

Ingredients
- Butter or oil for coating baking dish
- 3 lb russet potatoes, peeled and cut into 1/8 inch thick slices
- 1/2 large onion, sliced
- 1 1/2 C heavy cream
- 3 fresh thyme sprigs
- 2 garlic cloves, chopped
- 1/2 tsp freshly ground nutmeg
- 1/2 teaspoon Salt
- 1/2 teaspoon pepper
- 1 C Gruyere, grated
- 1 C mild cheddar, grated
- 1/2 C Parmesan, grated
Directions
- Preheat oven to 350 degrees.
- In a small sauce pan, heat the cream, thyme, garlic and nutmeg.
- While cream is heating up, butter a 9X13 baking dish.
- Place a layer of potatoes in an overlapping pattern and season with salt and pepper.
- Sprinkle 1/2 of the onion slices on the potato layer. Remove the cream from the heat and pour a little over the potatoes. Sprinkle with 1/3 all Gruyere, cheddar and Parmesan.
- Make 2 more layers, using onion only on the next one.
- Bake, uncovered for 45 minutes. If the top is browning too fast, tent with aluminum foil.
- Remove from oven and let cool a bit before serving.
Original source: cookincowgirl.com