Easy Lemon Meringue Pie
["1 1/2 c. sugar", "3 Tbsp. cornstarch", "3 Tbsp. flour", "dash of salt", "1 1/2 c. hot water", "3 egg yolks, slightly beaten", "2 Tbsp. butter", "1/3 c. fresh lemon juice", "1 (9-inch) baked pastry shell", "3 egg whites for meringue"]
["In saucepan", "mix", "first", "4", "ingredients.", "Gradually add water, stirring constantly.", "Cook\tand", "stir", "over", "high", "heat until mixture begins to", "boil.", "Reduce heat, cook and stir for 2 minutes.", "Mix small", "amount", "of", "hot mixture into egg yolks, then return to hot", "mixture.", "Bring", "to boiling point and cook another 2 minutes, stirring constantly.", "Add butter and slowly add lemon juice.", "Pour", "into\tpastry\tshell.\tSpread\tmeringue over filling, sealing edges to pastry.", "Bake at 350\u00b0 for 12 to 15 minutes or until golden brown."]
["sugar", "cornstarch", "flour", "salt", "water", "egg yolks", "butter", "lemon juice", "pastry shell", "egg whites"]