This is a long time favorite, from Notebook 4.
5 medium potatos, cut into bite size chunks
2 TB oil
4TB taco seasoning
1 lb ground beef
1/4 cup diced onion
1/2 cup diced bell pepper
2 cups salsa
1 cup shredded cheddar or mozza cheese
Preheat oven to 425'. Toss potatos with oil and taco seasoning and spoon into dish. Bake, stirring once, for 30 minutes, until tender.
Meanwhile, brown the ground beef, onions and peppers over medium high heat, then stir in the salsa. Lower the heat and simmer for 10 minutes.
Remove potatos from oven, cover with the ground beef mixture, top with cheese.
Bake until the cheese is melted, about 10 minutes.