1 cup rice flour
1/4 cup potato starch
1/4 cup corn starch
1 Tbsp sugar
1/2 tsp xanthan gum
1/2 tsp salt
1/4 tsp baking powder
5 Tbsp butter flavored shortening
5 Tbsp unsalted butter
1 egg, beaten
1 Tbsp ice water
1 1/2 tsp cider vinegar
Mix together dry ingredients in a medium bowl. Cut butter and shortening into small pieces and cut into dry mixture, until it forms chunks the size of peas. In a small bowl, combine wet ingredients. Add all at once to mixture and, using a fork, combine until it forms a ball. Chill for one hour. Divide the ball in half and roll out in between two pieces of wax paper, or plastic wrap.
Lay out and press into pie plate. Poke bottom of pie crust and bake at 425 for 12 minutes, until golden brown. Set aside to cool.
3 eggs, separated
1 1/2 cups sugar
3 Tbsp GF flour
3 Tbsp cornstarch
dash salt
1 1/2 cups water
2 Tbsp butter
finely shredded peel from one lemon
1/2 cup lemon juice
Set egg whites aside for meringue. Mix sugar, flour, cornstarch and salt in medium saucepan. Gradually stir in water, cook over medium-high heat, stirring constantly until mixture is thickened and bubbly. Reduce heat; cook and stir two minutes more. Remove from heat. Slightly beat egg yolks in small bowl with a fork, gradually add about 1 cup of the thickened mixture in with the yolks. Pour egg yolk mixture into remaining hot filling in saucepan. Bring to a gentle boil. Cook and stir 2 minutes more. Remove from heat. Stir in butter and lemon peel. Gently stir in lemon juice. Keep filling warm while preparing meringue.
3 egg whites
1/2 teaspoon vanilla
1/4 teaspoon cream of tartar
6 Tbsp sugar
In a large glass mixing bowl, combine egg whites, vanilla and cream of tartar. Beat with an electric mixer on medium speed about 1 minute or until soft peaks form.
Gredually add sugar, one tablespoon at a time, until the sugar dissolves and forms stiff, glossy peaks.
Pour lemon filling into pie shell. Immediately spread meringue over hot filling, carefully sealing to edge of pastry to prevent shrinkage. Use the edge of the knife to create peaks in the meringue. Bake at 350 for about 15 minutes, or until the peaks of the meringue are a golden brown.
Cool for about an hour, then transfer to the refrigerator and chill for 3-6 hours before serving (so the filling properly sets up).