This Asian Sweet Potato Casserole is a must-have holiday side dish! It’s creamy, rich, and topped with a buttery walnut-brown sugar crumble. It's easy to prepare and can be made ahead, making it ideal for busy holiday gatherings.
Prep the Sweet Potatoes: Peel and chop the Korean sweet potatoes into cubes. Boil in salted water until tender, about 15-20 minutes. Drain and mash until smooth.
Make the Casserole Base: In a large bowl, mix the mashed sweet potatoes, condensed milk, egg, half and half, cinnamon, nutmeg, vanilla extract, and melted butter. Stir until everything is combined.
Prepare the Topping: In a separate bowl, mix together the flour, brown sugar, and melted butter until it forms a crumbly mixture. Stir in the walnuts.
Assemble the Casserole: Spread the sweet potato mixture into a greased casserole dish. Evenly sprinkle the walnut topping over the top.
Bake: Preheat your oven to 350°F (175°C). Bake the casserole for 25-30 minutes, until the top is golden and bubbly.
Serve: Let it cool slightly before serving, and enjoy the creamy, crunchy deliciousness!
Notes
Make Ahead: Prepare the casserole a day before your event and store it in the refrigerator. Just add the topping before baking!Perfect Texture: For extra smooth sweet potatoes, use food processor instead of mashing by hand.Balance the Sweetness: If you prefer a less sweet casserole, cut the condensed milk in half or skip it in the sweet potato mixture and keep it only for the topping.