This is one of the simplest and easiest pies to make 
I have made this and posted my recipe Old school style 
4 whole eggs 
1 cup granulated sugar
2 tablespoons melted butter
1 cup Karo syrup
1 tablespoons vanilla
1 cup pecan halves
Place pecans in pie shells
Mix all remaining ingredients together with mixer and add to 8 in uncooked pie shell
Cook in 350 degree oven for 45 minutes to 1 hour