Bake bacon in oven according to recipe directions. Save 2-3 Tbsp of bacon grease. Keep oven hot at 400.

While bacon is baking, peel and chop potatoes. Place potatoes on baking sheet and toss to thoroughly coat with bacon grease. Sprinkle with salt and pepper. Spread potatoes in a single layer and bake 20 minutes, stir well and bake an additional 20 minutes. Stir again, making sure that none of the potatoes are sticking to the tray. Bake another 15 minutes.

Chop bacon into small pieces. Remove potatoes from oven, stir again, and sprinkle generously with shredded cheese and chopped bacon. Return baking sheet to oven and bake an additional 2-3 minutes, until the cheese has melted. Top with sliced green onions just before serving.