Lemon Curd Layer Cake

Directions

1. 1
   In a medium, heavy-bottomed saucepan, whisk together zest and juice, sugar, eggs, and cornstarch.
2. 2
   Over medium high heat, cook mixture 4 to 5 minutes, whisking constantly, until thick and bubbly.
3. 3
   Press though a fine mesh strainer into a bowl.
4. 4
   Chill at least 1 hour.
5. 5
   Place 1/3 of the chilled lemon curd in a mixing bowl and gently fold in the whipped topping.
6. 6
   Set aside.
7. 7
   With a long serrated knife, trim top of cake, if desired.