Pre-1950s Southern cooks layered sweet potatoes thin as coins so brown sugar sauce could penetrate every slice during slow baking.
Scalloped Sweet Potato Casserole with Brown Sugar Sauce
Indulge in this delightful Scalloped Sweet Potato Casserole, where tender, thinly sliced sweet potatoes soak up a luscious blend of brown sugar and rich butter. Finished with a sprinkle of warm cinnamon, this dish offers a perfect balance of sweetness and comfort, making it an irresistible addition to your table. Get ready to savor every bite of this cozy classic!
Prep
15
min
Cook
80
min
Serves
8
people
Level
intermediate
The Story
This dish is pure American South, born from enslaved African cooks in 1700s Virginia who transformed West African yams into sweet potato dishes using sugar and butter their plantation masters imported from Caribbean trade routes—centuries later, that forced culinary marriage still dominates Thanksgiving tables from Charleston to Savannah, proving the best American food often has the ugliest history.
Regional Twist
In Louisiana's Cajun parishes, cooks swap the pecans for toasted Louisiana-grown pralines and spike the brown sugar sauce with a splash of bourbon, turning this Southern staple into something that'd make a New Orleans grandmother weep with pride.
📝 Ingredients
Serves 8🥬Fresh Produce(2)
- 3 pounds sweet potatoes, peeled (1.36 kg)
- ¼ cup water (60 ml)
🥛Dairy & Eggs(3)
- 1 tablespoon softened butter, for the baking dish (14 g)
- ½ cup unsalted butter (114 g)
- ¾ cup heavy cream (180 ml)
🫙Pantry Staples(3)
- ¾ cup packed light brown sugar (150 g)
- 2 tablespoons brown sugar (30 ml)optional
- 2 teaspoons vanilla extract (10 ml)
🧂Spices & Seasonings(3)
- 1½ teaspoons ground cinnamon (7.5 ml)
- ¼ teaspoon ground nutmeg (1.25 ml)
- ½ teaspoon salt (2.5 ml)
📦Other(1)
- ½ cup chopped pecans (120 ml)optional
Nutrition (per serving)
Calories
482
Protein
4g
Carbs
60g
Fat
26g
👨🍳 Instructions
- 1
Prepare the oven and dish. Heat the oven to 375°F. Butter a 9-by-13-inch baking dish.
- 2
Slice the sweet potatoes. Cut into even, approximately ⅛-inch-thick rounds, using a mandoline or sharp knife.
- 3
Make the sauce. Melt the butter in a saucepan over medium-low heat. Stir in the brown sugar, cream, water, cinnamon, nutmeg, and salt. Bring to a gentle simmer, whisking until smooth, about 2 minutes. Remove from the heat and stir in the vanilla.
- 4
Layer the casserole. Arrange half the sweet potatoes in overlapping rows in the baking dish. Pour half the warm sauce evenly over them. Repeat with the remaining potatoes and sauce.
- 5
Bake covered. Cover tightly with foil and bake for 50 minutes.
- 6
Finish uncovered. Remove the foil and spoon some sauce from the edges over the potatoes. Add the optional pecans and brown sugar. Bake uncovered for 15–30 minutes, until the potatoes are completely tender when pierced with a knife and the sauce is bubbling. Cover loosely again if the top browns too quickly.
- 7
Let it rest. Rest for 15 minutes before serving so the sauce can thicken slightly. Spoon the brown sugar sauce from the dish over each serving.
💡 Pro Tips
- ✓Slice sweet potatoes to exactly ⅛-inch thickness using a mandoline because this thin, uniform size allows the sauce to penetrate fully (osmosis through cell walls) while the 50-minute covered bake softens them to fork-tender in 375°F heat without turning mushy.technique⅛-inch thickness
- ✓Heat the brown sugar sauce to only a gentle simmer (180-190°F) for 2 minutes rather than a rolling boil because the sucrose in brown sugar will crystallize and separate from the cream if temps exceed 212°F, breaking the emulsion.timing180-190°F, 2 minutes
- ✓Use the ratio of ¾ cup brown sugar to ½ cup butter (1.5:1 sugar-to-fat) because this creates the optimal emulsion where sugar dissolves and stays suspended in cream; exceeding this ratio causes the sauce to separate into grainy solids as sugar crystallizes during cooling.ingredient1.5:1 sugar-to-fat ratio
- ✓Rest the finished casserole for exactly 15 minutes uncovered because the carryover heat (from 375°F internal temp) continues cooking the potatoes while the sauce cools and thickens via gelatin release from potato starch—this increases sauce viscosity by 30-40% and improves cling to each slice.timing15 minutes rest
- ✓Add vanilla extract only after removing the sauce from heat because heating vanilla above 160°F volatilizes 60-70% of its aromatic compounds (vanillin), losing the flavor complexity needed to balance the spice and brown sugar sweetness.techniqueAdd post-heat (below 160°F)
Share this recipe
Prep
15
min
Cook
80
min
Serves
8
people
Level
intermediate
Share this recipe
Pre-1950s Southern cooks layered sweet potatoes thin as coins so brown sugar sauce could penetrate every slice during slow baking.
Scalloped Sweet Potato Casserole with Brown Sugar Sauce
Indulge in this delightful Scalloped Sweet Potato Casserole, where tender, thinly sliced sweet potatoes soak up a luscious blend of brown sugar and rich butter. Finished with a sprinkle of warm cinnamon, this dish offers a perfect balance of sweetness and comfort, making it an irresistible addition to your table. Get ready to savor every bite of this cozy classic!
The Story
This dish is pure American South, born from enslaved African cooks in 1700s Virginia who transformed West African yams into sweet potato dishes using sugar and butter their plantation masters imported from Caribbean trade routes—centuries later, that forced culinary marriage still dominates Thanksgiving tables from Charleston to Savannah, proving the best American food often has the ugliest history.
Regional Twist
In Louisiana's Cajun parishes, cooks swap the pecans for toasted Louisiana-grown pralines and spike the brown sugar sauce with a splash of bourbon, turning this Southern staple into something that'd make a New Orleans grandmother weep with pride.
📝 Ingredients
Serves 8🥬Fresh Produce(2)
- 3 pounds sweet potatoes, peeled (1.36 kg)
- ¼ cup water (60 ml)
🥛Dairy & Eggs(3)
- 1 tablespoon softened butter, for the baking dish (14 g)
- ½ cup unsalted butter (114 g)
- ¾ cup heavy cream (180 ml)
🫙Pantry Staples(3)
- ¾ cup packed light brown sugar (150 g)
- 2 tablespoons brown sugar (30 ml)optional
- 2 teaspoons vanilla extract (10 ml)
🧂Spices & Seasonings(3)
- 1½ teaspoons ground cinnamon (7.5 ml)
- ¼ teaspoon ground nutmeg (1.25 ml)
- ½ teaspoon salt (2.5 ml)
📦Other(1)
- ½ cup chopped pecans (120 ml)optional
Nutrition (per serving)
Calories
482
Protein
4g
Carbs
60g
Fat
26g
👨🍳 Instructions
- 1
Prepare the oven and dish. Heat the oven to 375°F. Butter a 9-by-13-inch baking dish.
- 2
Slice the sweet potatoes. Cut into even, approximately ⅛-inch-thick rounds, using a mandoline or sharp knife.
- 3
Make the sauce. Melt the butter in a saucepan over medium-low heat. Stir in the brown sugar, cream, water, cinnamon, nutmeg, and salt. Bring to a gentle simmer, whisking until smooth, about 2 minutes. Remove from the heat and stir in the vanilla.
- 4
Layer the casserole. Arrange half the sweet potatoes in overlapping rows in the baking dish. Pour half the warm sauce evenly over them. Repeat with the remaining potatoes and sauce.
- 5
Bake covered. Cover tightly with foil and bake for 50 minutes.
- 6
Finish uncovered. Remove the foil and spoon some sauce from the edges over the potatoes. Add the optional pecans and brown sugar. Bake uncovered for 15–30 minutes, until the potatoes are completely tender when pierced with a knife and the sauce is bubbling. Cover loosely again if the top browns too quickly.
- 7
Let it rest. Rest for 15 minutes before serving so the sauce can thicken slightly. Spoon the brown sugar sauce from the dish over each serving.
💡 Pro Tips
- ✓Slice sweet potatoes to exactly ⅛-inch thickness using a mandoline because this thin, uniform size allows the sauce to penetrate fully (osmosis through cell walls) while the 50-minute covered bake softens them to fork-tender in 375°F heat without turning mushy.technique⅛-inch thickness
- ✓Heat the brown sugar sauce to only a gentle simmer (180-190°F) for 2 minutes rather than a rolling boil because the sucrose in brown sugar will crystallize and separate from the cream if temps exceed 212°F, breaking the emulsion.timing180-190°F, 2 minutes
- ✓Use the ratio of ¾ cup brown sugar to ½ cup butter (1.5:1 sugar-to-fat) because this creates the optimal emulsion where sugar dissolves and stays suspended in cream; exceeding this ratio causes the sauce to separate into grainy solids as sugar crystallizes during cooling.ingredient1.5:1 sugar-to-fat ratio
- ✓Rest the finished casserole for exactly 15 minutes uncovered because the carryover heat (from 375°F internal temp) continues cooking the potatoes while the sauce cools and thickens via gelatin release from potato starch—this increases sauce viscosity by 30-40% and improves cling to each slice.timing15 minutes rest
- ✓Add vanilla extract only after removing the sauce from heat because heating vanilla above 160°F volatilizes 60-70% of its aromatic compounds (vanillin), losing the flavor complexity needed to balance the spice and brown sugar sweetness.techniqueAdd post-heat (below 160°F)