Shepherd's Pie

This is my ex-wife's version of shepherd's pie. She uses ground beef instead of lamb just because it's easier to get here.
Ingredients:
1 pound ground beef
4 potatoes mashed
1 cup shredded cheddar cheese
1 cup peas
1 package worth (she uses packaged, I make my own both work fine) taco powder
salt and pepper to taste

Instructions:
Cook meat with taco powder, and drain. Mix in peas, and spread into backing dish. Top with potatoes, and cheese. Bake at 350 until cheese melts, and browns slightly (about 30-45 minutes) let sit for 5 minutes and serve.
Simple dish that lends itself to changes well, and inexpensive way to feed a group (this feeds about 4 we double it to feed 7)