Perfect Baked Sweet Potato Wedges with a Crispy Edge

The first time I pulled a tray of baked sweet potato wedges from the oven and actually heard them crackle, I knew I had cracked the code. Not limp. Not mushy. Not that sad, steamed texture that makes you wonder why you didn't just order fries. These wedges come out with a thin, shattery crust and a creamy, sweet interior. The secret is a cold-water soak and a dusting of cornstarch—two steps that cost nothing but change everything.

Why Sweet Potato Wedges Go Soft (And How to Fix It)

Sweet potatoes have more sugar and moisture than regular potatoes. That's what makes them taste so good—and what makes them tricky to crisp. When you bake them without preparation, the moisture turns to steam inside the oven, and the sugars caramelize before the exterior has a chance to set. The result? A soft, sticky exterior instead of a firm, crispy one.

Here's the fix in three parts:

• Soak them. Ten minutes in cold water pulls out surface starch. That starch would otherwise turn into a gummy layer during baking.
• Dry them well. After the soak, pat the wedges completely dry. Any water left on the surface creates steam, which prevents browning.
• Add cornstarch. A light coating of cornstarch absorbs moisture from the surface as the wedges bake, creating a thin, crispy shell. I keep the ratio at about 1 tablespoon of cornstarch per large sweet potato.

The Right Cut for Even Cooking

Cutting sweet potatoes into wedges seems straightforward, but thickness matters. Wedges that are too thin burn before the center cooks. Wedges that are too thick end up soft all over. I aim for about ½ inch at the thickest part.

Here's my method: Slice off a thin piece from one side of the potato so it sits flat on the cutting board. This prevents rocking. Cut the potato in half crosswise (not lengthwise), then stand each half on its flat end and cut into wedges. This gives you wedges that are roughly the same size, so they bake evenly.