A couple of things to remember when making puddin' pies with meringue topping. First and foremost make sure the eggs are at room temperature before you separate and try to whip the eggs. They froth better if you have them warm as opposed to cold from the fridge. Another thing to help them whip their best is invest a few bucks in a copper bowl. The copper acts with the egg white to gain more volume. Lastly, a bakers sugar also called caster sugar will dissolve easier in the egg white making a better final product.
9 inch baked pie shell - cooled to room temperature
1 1/2 c brown sugar
1/4 c flour
1 12 oz can condensed milk (not sweetened)*
1/8 t salt
3 egg yolks beaten
1 t vanilla
3 egg whites
1/4 t flour
6 T sugar
Bake 9" pie shell according to your recipe instructions for blind baking. Cool
Mix sugar, flour, condensed milk, salt and egg yolks in a heavy sauce pan. Whisk until dissolved. Heat and whisk constantly over medium heat until it thickens and starts to bubble. Remove from heat and whisk in vanilla and butter. Add to your baked pie shell.
For the meringue add egg whites and cream of tartar to bowl. Beat until soft peaks form. Increase speed and beat in sugar 1 tablespoon at a time until stiff peaks form. (About 4 minutes total). Spread over the hot filling pushing to edges to seal. Bake in 350F oven until browned. Cool completely before serving. Refrigerate left overs.
*sometimes sold as evaporated milk.