In a medium sauce pan bring water, brown sugar, bourbon to a boil.
Boil 2 minutes.
Remove from heat and pour over the dates.
Stir in the baking soda.
Set aside for 5 minutes.
In a bowl, whisk together flour, baking powder and salt; set aside.
In the bowl of a stand mixer fitted with the paddle attachment beat together 1 cup butter (2 sticks) and sugar until fluffy. ~6-8 minutes
Beat in eggs 1 at a time.
Stop the mixer and add 1/2 of the flour mixture and beat until just combined.
Add date bourbon mixture; mix until just combined.
Add remaining 1/2 of the flour mixture and toffee chips; stir until just combined.
Spoon batter into prepared pan.
Bake 45 – 50 minutes or until knife inserted in center comes out clean.
Remove from the oven and allow to cool in the pan for 10-15 minutes.
Place a plate over top the bundt pan and in one swift motion, flip it over to remove the cake from the pan.
Allow to cool completely.
While the cake is cooling in a medium sauce pan over medium heat bring brown sugar, vanilla extract, whipping cream, bourbon and remaining stick of butter (1/2 cup) to a boil.
Boil for 2 minutes, reduce heat and simmer 15 minutes or until thickened.
When ready to serve, drizzle 1/2 of boubon sauce over top of cake, reserving other 1/2.