Instructions

  1. Preheat oven to 350.
  2. Lightly grease a 9-10 inch pie plate.
  3. Sprinkle mushrooms, cheese, and onion evenly over bottom of pie plate.
  4. Place remaining ingredients in blender, cover, and blend on high for 1 minute (or whisk by hand until mixed well).
  5. Pour into pie plate.
  6. Bake until golden brown and knife inserted in center comes out clean (50-55 minutes).
  7. Let stand 5 minues before cutting.
  8. Refrigerate leftovers.