Steff'S Shepherd Pie

Directions

1. 1
   Preheat an oven to 350 degrees F (175 degrees C).
2. 2
   Cook and stir ground beef in a skillet over medium-high heat until beef is browned, about 10 minutes. Drain fat. Mix in green beans, cream of mushroom soup, and onion.
3. 3
   Pour beef mixture into a 2 quart casserole dish and top with Cheddar cheese. Spread mashed potato on top.
4. 4
   Bake in the preheated oven until the pie is hot, and the mashed potatoes are golden brown, about 30 minutes.