Preparing the Potato Layer:
- Preheat your oven to 375°F (190°C). Grease a 9-inch springform pan or a deep pie dish with butter or non-stick cooking spray.
- Boil the Potatoes: Place the sliced potatoes in a large pot and cover with water. Bring to a boil, then reduce heat and simmer for about 5 minutes, just until the potatoes are slightly tender. Drain and let cool.
- Season: Toss the boiled potato slices in a mixture of heavy cream (or milk), garlic powder, salt, pepper, and melted butter. Set aside.
Preparing the Mushroom Filling:
- Cook the Mushrooms: In a large skillet, heat the olive oil over medium heat. Add the onion and garlic, sautéing until soft and translucent.
- Add Mushrooms and Herbs: Stir in the chopped mushrooms, parsley, thyme, salt, and pepper. Cook until the mushrooms have released their moisture and the mixture is relatively dry, about 10-15 minutes. Remove from heat and set aside to cool slightly. If using, stir in the Parmesan cheese.
Assembling the Cake:
- Layer the Potatoes and Mushroom Mixture: Start with a layer of potato slices at the bottom of the prepared pan, slightly overlapping. Spread half of the mushroom mixture over the potatoes. Repeat with another layer of potatoes, then the remaining mushroom mixture, finishing with a final layer of potatoes on top.
- Bake: Cover the pan with aluminum foil and bake in the preheated oven for about 40-45 minutes. Then, remove the foil and bake for an additional 15 minutes, or until the top layer of potatoes is golden and crispy.
- Rest and Serve: Let the potato and mushroom cake rest for 10 minutes after removing it from the oven. Carefully release the sides of the springform pan (if using) before slicing. Garnish with additional chopped parsley if desired.
Tips for Success:
- Slicing Potatoes: Use a mandoline slicer for uniformly thin potato slices, which will cook evenly.
- Mushroom Variety: Experiment with different types of mushrooms like cremini, shiitake, or portobello for varied flavors.
- Serving: This dish pairs beautifully with a simple green salad or steamed vegetables for a complete meal.
This Savory Potato and Mushroom Cake is a celebration of flavors and textures, from the crispy potato topping to the rich, umami-packed mushroom center. It’s a dish that stands out for its elegance and simplicity, proving that with a few well-chosen ingredients, you can create a meal that’s both satisfying and sophisticated. Whether served as a side or a main, it’s sure to bring warmth and enjoyment to any dining table.