Tuesday, March 17, 2026

Plant-Based Recipe: Savory Sweet Potato Gratin

 

Savory Sweet Potato Gratin 
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This savory Sweet Potato Gratin recipe offers a lighter, sophisticated twist on a classic comfort food side dish. By using olive oil instead of butter and water instead of cream, it focuses on the earthy flavor of the sweet potatoes, accented by nutty dairy or non-dairy Gruyère cheese. 

Ingredients (serving size 6):

6 medium organic sweet potatoes, peeled and sliced 1/8-inch thick (best with mandoline slicer)
1/2 cup fresh parsley, chopped
1 cup Gruyère cheese, shredded
1 tbsp. black sesame seeds
1 tsp. sea salt
1/4 cup + 1 tbsp. olive oil (divided)
1/2 cup warm water 

Instructions:

Prep: Preheat oven to 400°F. Grease a 9x13 inch or similar 2-quart baking dish with 1 tbsp. olive oil.

Mixture: In a large bowl, mix the potatoes, parsley, cheese, salt, black sesame seeds, and the 1/4 cup olive oil.

Assemble: Arrange the ingredients in the baking dish, overlapping slightly. Pour the 1/2 cup warm water over the dish after layering to ensure it steams properly.

Bake: Cover with foil and bake for 45 minutes. Remove foil and bake for another 15 minutes, until the top is golden and potatoes are tender.

Rest: Let the gratin rest for 10-15 minutes before serving to allow the gratin to set. 

Pairings: This delicious sweet potato gratin pairs best with bright, crunchy, or savory plant-based dishes to balance its creaminess. Excellent pairings include a simple leafy green salad, garlic-sautéed kale, spicy roasted cauliflower, or a protein-rich side like herb-roasted chickpeas or butter beans. 

Enjoy! Let me know how you made it and share a picture!

Chef Ellie Lavender
Plant-Based Mediterranean Chef
Culinary & Wine Pairing Instructor
Event Caterer
Lavender Design + Cuisine

 

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