Preparation

• FOR THE MERINGUE:
  
  In the bowl of an electric mixer, whip egg whites with cream of tartar until they are frothy and form soft peaks. Whip until stiff. Slowly add sugar and continue whipping until they are glossy and form stiff peaks.
  Place in a 9-inch by 13-inch greased and floured pan. Bake 45 min. at 245 degrees. When lightly browned, turn off oven and leave the meringue to dry in oven for about one half hour.
  
  FOR THE LEMON FILLING
  
  Combine sugar, water and butter. Heat until sugar dissolves. Add cornstarch blended with cold water. Cook until clear. Add lemon juice and peel. Add egg yolks which have been beaten with milk. Stir constantly till mixture bubbles.
  Remove from heat and cool. Cover while cooling to prevent too much thickening on surface.
  
  FOR THE TOPPING
  
  Whip heavy cream with sugar and vanilla until stiff. Spread about a 1/3 of whipped cream on meringue layer. Spread lemon filling on whipped cream, then place remaining whipped cream on lemon filling. Refrigerate overnight.
  * Cool whip can be used