Preheat the oven to 350 degrees and prepare three 8" pans with parchment.
In a stand mixer fitted with a paddle attachment, combine butter, sugar and oil on a low speed until just combined. About 1 minute.
Add eggs and vanilla on medium/low speed. Mix until combined.
Add flours, salt, baking powder and Nektar Honey Crystals. Mix on a low speed until just combined. Do not over mix.
Slowly stream in buttermilk. Mix until combined.
Divide batter evenly between three pans. Bake for 25-30 minutes.
Set pans on a cooling rack to cool.