Recipe: Make Your Own Pumpkin Spice Latte
I haven't tried this.
Nothing tastes like Starbucks' PSL in my opinion. Nothing. I know most other coffee chains have their own versions...but most are downright nasty to me. It's the spice. You gotta go heavy on the pumpkin, light on the spice.
Anyhow -- this recipe claims to create a Starbucks copy cat taste.