Step 1

Preheat the oven to 425ºF. Bake the potatoes on the oven rack until a knife can easily pierce the center of each potato, about 45 minutes. Remove the potatoes and let cool slightly on a rack; reduce the oven heat to 375ºF.

Step 2

Split the potatoes in half horizontally (use oven mitts to protect your hands). Scoop out the flesh from each potato half, leaving a 1⁄4-inch-thick layer still in the shell. Transfer the potato flesh to a medium bowl.

Step 3

Add the feta, yogurt, butter, and chives to the potato flesh and mash well. Stuff the filling into the shells and arrange filling-side up on a baking sheet. Bake until the filling is hot in the center and the edges are lightly browned, about 12 minutes. Yields 2 potato halves per serving.