Lemon Macaroon Tartlets
["1 egg, lightly beaten", "3/4 c. sugar", "1 Tbsp. plus 2 tsp. cornstarch", "1/2 tsp. grated lemon rind", "1/3 c. water", "1/3 c. fresh lemon juice", "2 drops yellow food coloring (optional)", "Macaroon Tart Shells"]
["Place egg in a small bowl; set aside.", "Combine sugar, cornstarch, and lemon rind in a saucepan; stir well.", "Gradually add water and lemon juice; stir with a wire whisk until blended.", "Bring to a boil over medium heat; cook 1 minute, stirring constantly. Gradually stir one fourth of hot lemon mixture into egg; add to remaining lemon mixture, stirring constantly.", "Cook over medium heat 1 minute or until thickened, stirring constantly.", "Pour mixture into a bowl; stir in food coloring, if desired.", "Place plastic wrap on surface, and chill.", "Spoon 1 Tbsp. plus 1 tsp. lemon mixture into each Macaroon Tart Shell.", "Top each with 2 tsp. whipped topping, and sprinkle with 1/2 tsp. toasted coconut.", "Yield 1 dozen."]
["egg", "sugar", "cornstarch", "lemon rind", "water", "lemon juice", "coloring", "Tart Shells"]