In large bowl beat together butter, sugar, vanilla and salt (I used my hand held mixer)
Add in egg and mix until combined
Slowly add flour and mix until dough is formed
Stir in toffee bits
In a separate bowl beat together cheesecake ingredients
Press cookie dough into bottom of crock
Pour cheesecake mixture over the top and spread evenly
Top with apple and caramel bits
Cover and cook on high for 2-3 hours
Cool completely when done before removing from crock
Notes
I cooked these for 2.5 hours on high in my 6 quart oval crock until the center was set and then let them cool for about 45 minutes before slicing and removing