Beat the butter and both sugars until light and fluffy. Add the eggs one at a time.
Mix the bourbon, mashed banana, buttermilk, and vanilla and set aside.
Add the wet and dry ingredients to the butter and sugar 1/3 at a time. Mix on low until combined
Divide between two greased cake pans and bake at 350 for 35 minutes.
Make the frosting by beating the cream cheese, butter, powdered sugar, vanilla, and caramel together.
Frost and serve!