Microwave Lemon Meringue Pie

1 1/8 to 1 1/2 c sugar
1/3 c cornstarch
1 1/2 c boiling water
3 egg yolks, beaten
3 T butter
1/4 to 1/2 c lemon juice
1 t grated lemon peel
1 baked 9 inch pie crust

Mix sugar and cornstarch thoroughly in a 1 quart glass measuring
bowl Stir in water.  Cook in microwave 2 1/2 minutes at high.
Stir.  Continue cooking 1 minute on high, or until thick.  stir
after 30 seconds.

Beat small amount of hot mixture into egg yolks, then put into
mixture in glass measuring bowl.  Cook in microwave 30 seconds on
high.

Blend butter, lemon juice, lemon peel into mixture in glass measuring
bowl.

Cool, pour into baked pie shell.  Cover with meringue and brown
top under broiler in oven for a few minutes