Place 1 cup pecans in bottom of an unbaked pie shell.
Separately, bring the following to a slight boil over medium heat, stirring constantly to avoid burning on the bottom.
4 egg yolks
1/2 cup heavy whipping cream
2/3 cup corn syrup
1/2 cup salted butter
1 cup brown sugar
Pour mixture over pecans and bake for 40-45 minutes at 375 degrees.
For a special variation, spread melted chocolate on the bottome of the pie shell before adding pecans and filling.