Source: CindyMac (Adapted from November 2000 Southern Living)
adapted by http://theresalwaysthyme.blogspot.com/
1 cup whipping cream
3-4 ounces Parmesan cheese, shredded
3 large eggs, lightly beaten
1 1/2 tablespoons all-purpose flour
1 teaspoon baking powder
1/2 teaspoon salt
little freshly grated nutmeg
1/4 cup butter
3 medium sweet onions, thinly sliced
STIR together first 3 ingredients in a large bowl. Combine flour and next 3 ingredients; gradually stir into egg mixture. Set aside.
MELT butter in a large skillet over medium heat; add onion, and cook, stirring often, 30 to 40 minutes or until onion is caramel colored. Remove onion from heat.
STIR onion into egg mixture; spoon into a lightly greased pie plate or 8-x8-inch baking dish.
BAKE at 350° for 30 minutes or until set.