Sweet Onion Pie

My Dad's cousin, Don sent this recipe to me.  His wife makes it every year and it is always a hit.  




I forgot to take a picture but it basically a cheese and onion pie!  I will take one the next time I make it.



4-5 large sweet onions, sliced ¼ in. thick (quarter inch)
4 T. butter
Salt & Pepper
3 eggs
½ c. milk (half cup)
4 T. flour
1 c. grated sharp cheddar or Gruyere, plus
2 T. extra grated cheese for top
1 9 in. pastry crust, uncooked

In large skillet over medium heat, saute onions in butter until golden but not brown, about 40 minutes. Turn off heat. Add salt and pepper. Set aside.

Pre-heat oven to 400 degrees. In medium bowl, mix eggs, milk, flour, and the one cup of cheese. Add the onions, stir until evenly distributed.

Pour all into pie shell, sprinkle reserved 2 T. cheese evenly on top. Bake for 35 to 45 minutes, or until crust is brown. Let sit for 5 minutes before cutting.