In a large bowl, cream butter, cream cheese, and brown sugar,.when well mixed.
Add egg yolk and maple flavoring -- mix well.
Gradually add flour, mix to combine.and refrigerate for 2 hours.to chill well.
Meanwhile, in a saucepan, melt caramels, stir in cream cheese, until well blended.
Set aside.
Divide chilled dough in half.roll each portion between waxed paper to 1/4" thickness.
Spread caramel mixture over dough to within 1/2" of edges.
Roll up tightly, jelly roll style, starting at long side.
Wrap each roll in plastic wrap, refrigerate 4 hours.
Unwrap and cut into 1/4" thick slices.
Place 1" apart on greased sheets.
Bake at 350° for 12-14 minutes or until golden brown.
Remove to racks to cool.
To prepare CARAMEL FILLING:
Unwrap caramels and place in a small sauce pan over low heat -- cook till melted, stirring occasionally -- add softened cream cheese, and stir to combine.