Pennsylvania Sweet Potatoes in Tangy Sauce

This Pennsylvania Dutch-style sweet potato dish skips the marshmallows in favor of a tangy sauce that actually complements the natural sweetness of the potatoes instead of burying it. Pineapple juice, lemon juice, and ground ginger create a bright, fruity glaze that thickens as it bakes.

Boiling the sweet potatoes until barely tender before baking is important. You want them firm enough to hold their shape through the long oven time. Overcooked sweet potatoes turn to mush in the sauce. Cut them into quarters so each piece has enough surface area to absorb that tangy glaze.

The cornstarch-thickened sauce starts thin on the stovetop but reduces and concentrates during the hour-long uncovered bake. By the time it’s done, the sauce has turned into a glossy, sticky coating that clings to every piece. That slow evaporation is what builds the deep, caramelized flavor.

Pro Tips

• Cook sweet potatoes just until a fork pierces them with slight resistance. They’ll continue softening in the oven.
• Stir the sauce constantly as it heats on the stovetop. Cornstarch clumps if you walk away.
• Baste the potatoes halfway through baking so the top pieces glaze as evenly as the ones sitting in sauce.
• This makes a large batch. It reheats well and is ideal for Thanksgiving or holiday buffets.

Variations

• Add a pinch of cayenne to the sauce for a sweet-heat combination.
• Toss in fresh cranberries during the last 20 minutes of baking for a tart, seasonal twist.
• Replace pineapple juice with orange juice for a slightly different citrus profile.