Onion & Cheese Pie

Directions

1. 1
   Preheat oven to 180C (350F).
2. 2
   Line pie pan with pastry.
3. 3
   Saute finely diced onion in butter until tender.
4. 4
   Spread over pastry.
5. 5
   Sprinkle grated cheese over onion.
6. 6
   Blend eggs slightly beaten, flour and mustard.
7. 7
   Stir in mushroom soup (undiluted) and milk.
8. 8
   Pour over cheese and onion.
9. 9
   Bake 40-60 minutes.
10. 10
    Let stand 20 minutes before serving.