Preheat oven to 425°F (220°C); scrub potatoes and pat dry.
Pierce potatoes several times with a fork; rub with oil and salt generously.
Bake directly on oven rack with a sheet below for drips, 50-60 minutes until skins are crispy and centers pierce easily with a fork.
Meanwhile, cook bacon until crispy, shred cheese, slice onions, and warm hot toppings such as chili or broccoli.
Arrange toppings in separate bowls on table or counter.
Cool potatoes 2-3 minutes; slit centers and gently squeeze ends to open.
Let everyone add butter and favorite toppings. Try butter, sour cream, cheese, bacon, and green onions, or chili and cheese for a heartier meal.