Equipment
Ingredients
Main
- 1000 g sweet potatoes, peeled and sliced into 1.5cm rounds
Lemon Glaze
- 60 g unsalted butter, melted
- 45 g light brown sugar, packed
- 45 ml lemon juice, freshly squeezed
- 60 ml water
- 4 g lemon zest, finely grated
- 3 g kosher salt
- 2 g fresh thyme, leaves only
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 246 kcal
- Protein
- 3 g
- Carbohydrates
- 41 g
- Fat
- 8 g
- Fiber
- 5 g
- Sugar
- 18 g
- Sodium
- 319 mg
- Saturated Fat
- 5 g
- Monounsaturated Fat
- 2 g
- Polyunsaturated Fat
- 0 g
- Cholesterol
- 22 mg
- Potassium
- 773 mg
- Calcium
- 78 mg
- Iron
- 1.5 mg
- Magnesium
- 60 mg
- Phosphorus
- 4 mg
- Zinc
- 0.7 mg
- Vitamin A
- 9503 mcg
- Vitamin C
- 9 mg
- Vitamin E
- 0.3 mg
- Vitamin K
- 1 mcg
- Vitamin B6
- 0.0 mg
- Vitamin B12
- 0.0 mcg
- Riboflavin
- 0.01 mg
- Niacin
- 0.0 mg
- Folate
- 2 mcg
- Water
- 19 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Preheat your oven to 200°C/400°F. Lightly grease your baking dish with a small amount of butter or neutral oil.
In a large mixing bowl, whisk together the melted unsalted butter, light brown sugar, freshly squeezed lemon juice, water, lemon zest, kosher salt, and fresh thyme leaves until the sugar is mostly dissolved.
Add the sliced sweet potatoes to the bowl and toss thoroughly to ensure each piece is coated in the lemon glaze. Arrange the rounds in an overlapping, shingled layer in the prepared baking dish. Pour any glaze remaining in the bowl evenly over the top.
Cover the baking dish tightly with aluminum foil. Bake at 200°C/400°F for 30 minutes. This traps the steam, allowing the sweet potatoes to tenderize without burning the sugars.
Carefully remove the aluminum foil. Baste the sweet potatoes with the juices accumulating at the bottom of the dish. Continue to roast uncovered for 15 to 20 minutes, basting once more halfway through.
Chef's Notes
- Using freshly squeezed lemon juice is critical; bottled juice lacks the volatile aromatic oils and bright acidity necessary to effectively offset the natural sweetness of the potatoes.
- For an extra layer of complexity, add a tiny pinch of cayenne pepper to the glaze. The subtle, warming back-note perfectly complements the sweet and sour profile.
- If preparing ahead for a large holiday meal like Thanksgiving, you can complete the covered baking step up to two days in advance. Chill the dish in the refrigerator, then finish with the uncovered roasting step just before serving, adding a few extra minutes to account for the chilled start.
- When selecting sweet potatoes, choose firm, unblemished ones with orange flesh (often labeled as yams in US supermarkets) for the best texture and moisture content.
Storage
Refrigerator: 4 days — Store in an airtight container. The glaze will thicken significantly when chilled.
Freezer: 1 month — Texture may become slightly softer upon thawing. Reheat gently in the oven.
Reheating: Reheat in a 175 C oven for 15 minutes or microwave in short bursts.
Troubleshooting
Sweet potatoes are hard in the center after total baking time.
Cause: Slices were cut too thick, or the foil seal was not tight enough to trap steam.
Fix: Add 2 tablespoons of hot water to the dish, re-cover tightly with foil, and bake for an additional 10 to 15 minutes.
Prevention: Use a mandoline or sharp knife to ensure even 1.5cm slices, and crimp foil tightly around the edges of the dish.
The glaze is watery and has not reduced.
Cause: The sweet potatoes held excess moisture, or the baking dish was too crowded.
Fix: Carefully pour the liquid into a small saucepan and simmer on the stove over medium-high heat until syrupy, then pour back over the potatoes.
Prevention: Use a wide enough baking dish to allow proper surface area for evaporation during the uncovered roasting phase.
Cultural Context
In the American South, sweet potatoes are traditionally served at holiday gatherings as heavily sweetened casseroles adorned with marshmallows, molasses, or brown sugar streusel. This preparation nods to the historic candied yam technique but intentionally pivots toward a brighter, more acid-driven flavor profile. By utilizing fresh lemon to balance the innate sugars of the root vegetable, this dish acts as a palate cleanser against the rich, savory elements of a traditional Thanksgiving table.
