Key Lime Pie

1 Graham Cracker Crust (I made my own) 
3 Egg yolks 
1 14oz Can sweetened condensed milk 
1/2 cup Key lime juice (approx. 12-16 key limes) 
2 tsp Grated lime zest

1. Preheat oven to 350F. 
2. Beat egg yolks until light and fluff. Gradually add in the condensed milk and beat until light and fluffy (yet again). 
3. Beat in lime jiuce and lime zest. 
4. Our filling into graham cracker crust and bake for 10-15 minutes, or until filling is set. (It will still be slightly jiggly in the middle.) Once cool, cover and refrigerate until serving time.