|Onions||6 Medium, thinly sliced (mild)|
|Butter||3 Tablespoon (unsalted)|
|Milk||1 Cup (16 tbs)|
Saute onions in butter in covered skillet for 30 minutes.
In bowl beat together milk and eggs.
Stir in onions and transfer to greased baking dish.
Bake 40 to 50 minutes at 325 degrees or until light golden.