Spooky Shepherd's Pie My ghosties didn't come out quite right because my mashed potatoes weren't stiff enough. You want them to stand up.  The casserole itself it's extremely good. Spooky Shepherd's Pie Recipe Type: Casserole Cuisine: American Author: Marsha Powell Prep time: 30 mins Cook time: 25 mins Total time: 55 mins Serves: 6 Ingredients