Change APPLE to PIE.
Par = 8 (two letter banks and two letter swaps will do it!)
a. LETTER SWAP: change one letter of the word to produce another 
b. LETTERBANK the word into another 
Each step must be discrete; you may not combine two transformations into one step. Newcomers to letter banking and Word Origami strategy may want to visit page 80 of The Vocabaret for Rosemarie’s Guide to Solving Word Origami puzzles.
Spread the good words,