Directions

1. Fill a medium saucepan 1/3 with water, heat over low/medium heat until simmering.
2. In a medium heat-proof bowl, add the egg yolks, sugar, lemon zest, lemon juice, and vanilla.
3. Whisk ingredients together and let sit for 2 minutes.
4. Place bowl onto the saucepan and heat, whisking gently for 7-8 minutes or until thickened.
5. Remove from heat and add in margarine, then mix until melted and incorporated.
6. Refrigerate until cool.
7. Enjoy in pies or on scones!