How To Make Meringue Crust

Use a clean and chilled bowl.
Separate eggs. Be sure there is no egg yolk in your egg whites. Use room temperature egg whites.
Beat egg whites until foamy.
Gradually add in sugar and cream of tartar.
Beat until glossy and holds a stiff peak.
Butter a 9 inch pie plate. I have made this pie many times when the egg whites didn’t get stiff and it looks more like thick white soup. That’s o.k.! Just pour it into the pan and it will be fine, I promise.