Susina makes great pies. At work we had an office competition to find the best apple pie in LA (don't ask, it really was for legit work purposes), and the Susina apple pie won hands down. Second place was the Apple Pan.
----- Apple Pan 10801 W Pico Blvd, Los Angeles, CA 90064
Simple things Sandwich and Pie shop just opened in Weho. I haven't been but have friends who swear by the owner's pies from when she was selling them at the Silver Lake farmers' market. http://simplethingsrestaurant.com/