- Preheat the oven to 350°F (175°C).
- In a food processor, blend the pistachios until finely ground.
- In a mixing bowl, combine the ground pistachios with melted butter and press into the bottom of a springform pan to form the crust.
- In a skillet, sauté the chopped mushrooms until they are soft and any moisture has evaporated.
- In a large bowl, mix the cream cheese, feta, parmesan, and eggs until smooth.
- Stir in the sautéed mushrooms, sour cream, and fresh herbs. Season with salt and pepper.
- Pour the filling over the crust in the springform pan.
- Bake for 45-50 minutes or until the center is set and the top is lightly golden.
- Allow to cool before removing from the pan and serving.
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