Lemon Lush Lasagna

Name: Lemon Lush Lasagna
Ingredients: 1 cup all-purpose flour; 2 tablespoons granulated sugar; 1/4 cup nuts (pecans or walnuts, chopped finely); 1/2 cup 1 stick unsalted butter, softened; 1 package (8 oz cream cheese, softened); 1 cup granulated sugar; Zest of 1 lemon; Juice of 1 lemon; 1 8 oz container whipped topping, thawed; 2 boxes (3.4 oz each instant lemon pudding); 3 cups cold milk; Garnish options; Zest of lemon; Lemon slices