Garbage fried potatoes

This recipe is great to use up leftovers in the fridge, it’s just thin fried potatoes with anything you can find to add to them – peppers, onions, garlic, anything you like!!
Ingredients:
2 tablespoons vegetable oil
4 large baking potatoes, peeled and thinly sliced
1 medium onion, chopped
(4 ounce) can sliced mushrooms, drained
1 red bell pepper, seeded and [...]