Preheat oven to 325° and line a 13 x 9 in pan with foil extending the ends over the sides.
For The Graham Cracker Crust
Mix graham cracker crumbs, sugar and melted butter together.
Press into prepared pan evenly, bake for 10 -12 minutes, remove and let cool completely.
For The Lemonade Cheesecake Filling
In a large bowl, beat cream cheese until smooth and creamy, about 2-3 minutes.
Add lemonade concentrate and lemon zest. Beat until blended.
In a medium bowl, beat evaporated milk and instant pudding mix for 2 minutes until thick.
Combine thick pudding mixture into cream cheese mixture and beat until well combined.
Spoon cheesecake mixture over graham cracker crust, cover and chill for 4+ hours.
For The Lemon Glaze
In a small sauce pan over low/medium heat, whisk together eggs, sugar, lemon zest and lemon juice until combined. Add butter to pan and continue stirring constantly.
Mixture will thicken and will be done when the lemon glaze mixture sticks to the back of a metal spoon.
Remove from heat, let cool then cover and chill in fridge for about an hour.
Spoon lemon glaze over lemonade cheesecake.
Remove cheesecake from pan, by foil handles, cut into bars and enjoy.