Originally from Dear Abby / Houston Post, via Mom
1c white Karo syrup
1c dark brown sugar
1/4t salt
1/4c melted butter
1t vanilla
Mix above together. I found that using an immersion blender got the consistency to a pleasantly creamy texture, but I was also using block-style brown sugar, instead of granulated. Regardless, it should be well mixed together and not lumpy.
Add:
3 eggs (slightly beaten)
1 heaping cup pecan halves
squeeze of lemon juice
Stir together.