Melt butter Cook onions very slowly in butter over very low heat stirring frequently Cook until they turn clear yellow about 1 hour
Add salt pepper and caraway to taste Let cool
Preheat oven to 400F
Thoroughly beat eggs and yolks into the sour cream Mix with the cooled onions
Pour into pie shell Bake 15 minutes; reduce heat to 350 and bake another 35-40 minutes until golden brown
Mrs G used to add about 1/4 teaspoon baking powder to the pie shell dough She did not use yeast which some German onion pie recipes use
These are the changes that I made from the original recipe that I found in a book the written recipe calls for 2 whole eggs plus 2 egg yolks; Mrs G used 3 whole eggs
The written recipe calls for 1 cup butter; I am guessing that it may not need that much