Amish Baked Oatmeal

1/4 cup butter
1 large egg
3/8 cup brown sugar
3/4 teaspoon baking powder
3/4 teaspoon vanilla
1/2 teaspoon nutmeg or cinnamon
1/8 teaspoon salt
1/2 cup milk
1 tablespoon milk
1 1/2 cups oatmeal (regular or quick)

Melt butter. Grease 1 1/2 quart baking dish and drop in eggs and beat well. Add brown sugar, baking powder, vanilla, nutmeg or cinnamon, and salt. Mix well, no lumps. Whisk in butter and both measures of milk, then add oats.Stir well, and refrigerate overnight.Bake, uncovered, at 350 for 35-45 min, or until set in the middle.Serve hot with warm milk poured over.