In a bowl, beat butter & cream cheese; blend in flour to form pastry consistency. Press into a deep dish 8-inch quiche pan. Set aside in refrigerator until filling is prepared.
Quiche Filling
In a skillet, saute sliced green onions, mushrooms & garlic in margarine until moisture has evaporated. Remove from heat. Preheat oven to 400 F.
Grate cheese. In a container, whisk together eggs, milk & seasonings. Sprinkle about 1/2 of the Gorgonzola cheese in the bottom of the quiche shell. Top with mushroom mixture & salmon chunks then with remaining cheese.
Bake at 400 F. for 10 minutes, adjust heat to 350 F. & continue baking for another 30 minutes. When filling is set, remove from oven & cool at least 10 minutes before cutting. It tastes great just out of the oven, but even better the next day.