Sweet Potato Parmesan Gratin
A simple gratin featuring sweet potatoes, thyme, low-fat milk, and parmesan cheese. Healthier than your average gratin yet just as satisfying.

Ingredients
6 servings
Instructions
- Preheat the oven to 400 degrees F (204 C).
- Butter or lightly oil a baking dish or cast iron skillet.
- Place the sliced potatoes in a bowl and season generously with salt and pepper. Add the thyme and half of the cheese and toss together.
- Transfer to the dish and pour on the milk. It should just cover the potatoes.
- Bake 30 minutes, remove from oven and carefully drain off a bit of the liquid (about 1/3 cup as original recipe is written). Sprinkle the remaining cheese over the top and return to the oven.
- Bake another 45-50 minutes, until the milk is absorbed, the potatoes are soft and the top and edges are golden. (Optional: drain off a bit more of the liquid as using low-fat milk instead cream can result in a bit of wateriness.)
- Let rest at least 20 minutes before serving so the juices can redistribute.
- Can be made ahead of time and reheated in the microwave or oven for serving.
Nutrition per serving
200kcal
💰 Cost Estimate
Total Ingredients
$169.00
$169.00
Per Serving
$28.00/serving
$28.00/serving
🏠 Savings
~$338.00 vs buying!
~$338.00 vs buying!
📋 Price Breakdown (67% ingredients detected)
| Ingredient | Amount | Subtotal |
|---|---|---|
| organic sweet potatoes | 2 | $53.00 |
| red or yellow potato | 1 small | $13.00 |
| ~1/4 tsp each salt and freshly ground pepper | - | - |
| thyme | 1 tsp | - |
| -1 cup Parmesan cheese | 0.75 | $82.00 |
| low-fat milk | 2 cups | $21.00 |
*Estimated market prices, may vary by region
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