iowagirleats
Skinny Sweet Potato Gratin
Skinny Sweet Potato Gratin tastes decadent yet is light, gluten-free and easily made dairy-free. A great swap for heavy holiday dishes!
👥 6 Servings⏱️ Prep & Cook: 1h 35m⏳ Prep: 20 min🔥 Cook: 1h 15m👤 Kristin Porter📖 iowagirleats
🥘 Ingredients
Check off ingredients as you prepare them:
🍳 Cookware
- ●skillet
- ●baking dish
- ●knife
- ●oven
- ●bowl
📝 Preparation Steps
1
Melt butter and extra virgin olive oil in a large skillet over medium heat. Add onions, season lightly with salt, then saute until starting to become tender, ⏱️ 10 minutes. Add dried thyme then continue to saute until onions are very tender and slightly caramelized, ⏱️ 15-20 minutes, stirring occasionally. Add garlic and sage then saute until garlic is fragrant, ⏱️ 2-3 minutes.
extra virgin olive oil1 Tablespoonsalt and peppersaltgarlic (minced)3 cloves
2
Add milk to the skillet, season generously with salt and pepper, then turn heat up to bring mixture to a bubble. Turn heat back down to medium then simmer until milk is just slightly thickened, ⏱️ 2-3 minutes (don't over-reduce.) Set aside.
salt and peppersalt
3
Preheat oven to 350 degrees then spray a 9x13" baking dish with nonstick spray. Layer half the sweet potatoes in tight rows in the bottom then season with salt and pepper. Using a slotted spoon, strain the onions from the milk then scoop onto potatoes and spread into an even layer. Top with remaining potatoes, season with salt and pepper, then drizzle reserved sauce on top (there won't be much.) Cover dish with foil then bake for ⏱️ 20 minutes. Remove foil then bake for 15 more minutes. Potatoes should be crisp tender when inserting a knife into them - if they're still hard, bake for another ⏱️ 5 minutes.
sweet potatoes (~4 medium and the same size, sliced 1/4" thick)3 lbsalt and peppersalt
4
Rinse then dry skillet used for sauce then place over medium-heat. Melt butter then add sage, bread crumbs, and a little salt. Saute until lightly toasted them add to a bowl and, once slightly cooled, stir in parmesan cheese (if using.)
salt and peppersalt
5
Sprinkle bread crumb mixture on top of sweet potatoes then bake for an additional ⏱️ 10-15 minutes or until bread crumbs are evenly toasted and sauce is bubbly. Let dish sit for ⏱️ 10 minutes then serve.
sweet potatoes (~4 medium and the same size, sliced 1/4" thick)3 lb
Nutrition Facts
calories
350 kcal
fat Content
9 g
serving Size
1 serving
fiber Content
8 g
sugar Content
13 g
sodium Content
386 mg
protein Content
8 g
trans Fat Content
0.2 g
cholesterol Content
14 mg
carbohydrate Content
61 g
saturated Fat Content
4 g
unsaturated Fat Content
4 g
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