I used Yukon Gold potatoes for it. Have also made something similar with a recipe that a friend gave me. The onions are not cooked first and it uses vegetable broth. Both are very good.
Vegan stuffed potatoes. I start with big baking potatoes. For each two that I bake, I make another one. We like them overstuffed! Plus I usually break one. Bake however you want and let cool enough to handle. Cut off the tops and scoop out enough potato so that you have a 1/8 inch shell. Mash the potatoes with plenty of rice or soy milk. You want a fairly soft mixture. Add lots of nutritional yeast to give it a cheese taste. Also some sliced scallions or chives and salt and pepper to taste. Stuff back in the shells and bake until heated through. Add more sliced scallions or chives on top just before serving.
Pan fried potatoes.
Potatoes, bacon, onion and peppers, pan fried.
Tater Tot Casserole.
Instant mashed potatoes mixed with onion, bacon and cheese.