Twice-Baked Sweet Potato Casserole

1 . Stage

Preheat the oven to 350 degrees F (175 degrees C). Line a half-sheet pan with foil or parchment paper; spray lightly with nonstick cooking spray.

2 . Stage

Pierce sweet potatoes well and place on the prepared baking sheet.

3 . Stage

Bake in the preheated oven until tender, about 90 minutes. Remove from heat and cool until potatoes are cool enough to handle. Remove skins. Leave the oven on.

4 . Stage

Meanwhile, place bacon in a large skillet and cook over medium-high heat, turning occasionally, until evenly browned, about 10 minutes. Drain bacon slices on paper towels. Crumble.

5 . Stage

Mix bread crumbs and melted butter in a small bowl and set aside.

6 . Stage

Mash potatoes well in a large bowl with a potato masher. Stir in chopped bacon, sour cream, onions, and softened butter. Stir to combine well. Spread mixture in a greased baking dish. Sprinkle crumb mixture evenly over the top of potatoes.

7 . Stage

Bake in the preheated oven until thoroughly heated and bread crumbs are just turning golden, about 30 minutes.