Scoop out the potatoes. When the potatoes are ready, remove the baking sheet from the oven and set aside to cool. Transfer the potatoes to a wire rack and let sit until cool enough to handle but still warm, about 15 minutes. Cut each potato in half lengthwise. Scoop out the insides, leaving about 1/4-inch of potato as the shell, and transfer the insides to a bowl. Reserve the scooped-out flesh for another use.