I always start this dish using leftover homemade mashed potatoes. That is what shepherds pie is or originally was... a dish using leftovers. Some people use chopped leftover roast, leftover sliced potatoes and peas. I usually just make it from an abundance of leftover mashed potatoes.
3-4 cups leftover mashed brought to room temp to make them spreadable,
2 pounds ground beef
1 medium onion
2 cups peas and carrots
2 teaspoons minced garlic
1/2 tablespoon onion powder
1 teaspoon fresh cracked black pepper
1 teaspoon better than bullion beef paste
1/2 cup hot water
(or substitute 1/2 cup ready beef stock for water and paste)
3 - 4 tablespoons pulverized croutons (put them in a baggy and beat them with a rolling pin)
1 tablespoon of butter
2 - 3 tablespoons deep red wine
(if you would prefer a more "saucey" type of filling, use 1/2 can Campbell's Golden Mushroom, don't confuse this with cream of mushroom... it is dark and rich and a whole different soup, more gravy like)You should not dilute it much, just about 1/8 cup. You do not want a brothey filling, it won't work.
Brown the ground beef, drain and set aside. Saute onions adding garlic for the 1 minute. Meanwhile, microwave frozen peas and carrots just until they are no longer cold but not hot. Add the peas and carrots to the onions and garlic, saute 1 more minute. Add wine and stir to de-glaze pan. If you are ommitting the wine, proceed to the beef broth. Pour in the beef stock and continue cooking till it bubbles. Add the saute mix to the ground beef, stir to incorporate. Melt your butter, transfer crouton crumbs to a bowl and stir in melted butter.
Assembly
Butter a casserole dish, add ground beef mixture. Top with mashed potatoes and spread them evenly over the ground beef forming a sealed topping. Sprinkle crouton crumb mixture over the potatoes. Cook in a 400 degree oven for 30 minutes.
Note: you can really play with this dish... use your leftover meat and whatever kind of veggies you have (just chop them small). Add cheese onto the top of the potatoes. Some people really prefer this to the crumb topping or put a combo of grated cheddar cheese topped with the crumbs. You will want to switch the oven heat to broil for a few minutes, watch it carefully if you do.
