Iron Skillet Butterscotch Pie

2 cups milk

2 egg yolks

2 ½ tbsp. flour

2 tbsp. butter

1 cup brown sugar

½ cup boiling water

1 baked 9-inch pastry or graham pie shell

In a bowl, stir together milk and yolks. Whisk in flour a little at a time until smooth.

In a large cast-iron skillet or a thick aluminum saucepan, combine butter and brown sugar. Cook over medium-low heat, stirring occasionally, until sugar has melted. Add boiling water. Stir in flour-egg-milk mixture. Cook over medium heat, stirring frequently, until thickened and smooth. Pour into pie shell and chill. Top with meringue or whipped topping. (I like using an electric skillet to make my fillings)