Transfer potatoes to bowl and microwave, uncovered, until dry and sticky, 8 to 10 minutes, stirring halfway through cooking. 4. Stir flour and pepper into potatoes.

Depending on the size of the potatoes, they'll take between 45 and 60 minutes to bake through. You'll know they're properly cooked when you can easily plunge a sharp knife, skewer, or fork into them.