Coconut Cream Purple Sweet Potato Gratin

Why You Will Love This Coconut Cream Purple Sweet Potato Gratin

A Vibrant and Luxurious Purple Sweet Potato Gratin

Transform ordinary purple sweet potato gratin into an extraordinary culinary masterpiece with this vibrant and luxurious touch of coconut cream. This show-stopping dish combines the natural sweetness of purple sweet potatoes with rich coconut cream, aromatic herbs, and a golden cheese crust. Perfect for holiday gatherings, special occasions, or when you want to elevate your dinner table with a stunning purple hue that’s as nutritious as it is beautiful.

An Innovative Fusion of Asian and European Flavors

What sets this purple sweet potato gratin apart is its innovative fusion of Asian and European culinary traditions. The classic French gratin technique meets the tropical warmth of coconut cream and the striking appearance of Asian purple sweet potatoes, creating a dish that’s both familiar and excitingly novel. The layers of thinly sliced purple sweet potato gratin create a mesmerizing pattern that reveals itself with each serving, while the coconut cream adds a subtle sweetness that perfectly complements the natural flavors of the potatoes.

More Than a Side Dish

Purple sweet potato gratin is more than just a side dish, it’s a conversation starter and a testament to the beauty of creative cooking. The combination of Gruyère and Parmesan cheese creates a golden, crispy top layer that gives way to tender, creamy purple sweet potatoes slices beneath. Whether you’re looking to impress guests at a dinner party, contribute a unique dish to a holiday gathering, or simply want to experiment with these beautiful root vegetables, this purple sweet potato gratin delivers both visual impact and incredible flavor in every bite.

Equipment

• Mandoline slicer
• Baking dish
• Heavy-bottom saucepan
• Box grater
• Sharp chef’s knife

Ingredients

• 3 lbs purple sweet potatoes, peeled and sliced 1/8-inch thick
• 2 cups full-fat coconut cream
• 1 cup whole milk
• 3 garlic cloves, minced
• 2 shallots, finely diced
• 1 tbsp fresh thyme leaves
• 1 tsp fresh rosemary, chopped
• 1½ cups Gruyère cheese, grated
• ½ cup Parmesan cheese, freshly grated
• 2 tbsp butter
• 1 tsp nutmeg, freshly grated
• Salt and white pepper to taste

Instructions

Step 1: Preheat the Oven

Preheat oven to 375°F (190°C).

Step 2: Prep the Sweet Potatoes

Wash and peel the purple sweet potatoes. Using a mandoline, slice them into uniform 1/8-inch thick rounds.

Step 3: Make the Cream Infusion

In a saucepan, combine coconut cream, milk, garlic, and shallots. Bring to a gentle simmer.

Step 4: Add Aromatics and Seasoning

Add thyme, rosemary, nutmeg, salt, and white pepper. Simmer for 5 minutes.

Step 5: Prepare the Baking Dish

Butter your baking dish. Layer purple sweet potatoes slices, slightly overlapping.

Step 6: Start the Layering Process

Pour one-third of the cream mixture over the potatoes and sprinkle with one-third of the cheese mixture.

Step 7: Repeat Layers

Repeat layering twice more, ending with cheese on top.

Step 8: First Bake – Covered

Cover with foil and bake for 30 minutes.

Step 9: Second Bake – Uncovered

Remove foil and bake for an additional 15 minutes until golden brown and bubbly.

Step 10: Rest Before Serving

Let rest for 10 minutes before serving.

Making Ahead & Storage

• Assemble up to 24 hours in advance, cover, and refrigerate.
• Keep leftovers in an airtight container for up to 4 days.
• Can be frozen for up to 3 months. Thaw overnight in refrigerator.

Expert Tips

• Slice potatoes uniformly for even cooking.
• Use room temperature dairy for better incorporation.
• Don’t skip the resting period, it helps the layers set.
• Pat purple sweet potatoes slices dry to prevent excess moisture.
• For extra crispiness, broil for 2-3 minutes at the end.

Presentation Ideas

• Garnish with fresh thyme sprigs.
• Serve on pre-warmed plates.
• Add a sprinkle of purple micro greens.

Nutritional Insights

This purple sweet potato gratin isn’t just a feast for the eyes, it’s also packed with nutrition! Purple sweet potatoes are loaded with anthocyanins, powerful antioxidants responsible for their vibrant color. These antioxidants have been linked to improved heart health, reduced inflammation, and enhanced cognitive function, and so many health benefits. The creamy combination of coconut cream and dairy adds healthy fats, which not only enrich the flavor but also aid in the absorption of fat-soluble vitamins, supporting better nutrient uptake. With its blend of rich, flavorful ingredients, this gratin offers a delicious way to enjoy a healthful, nourishing meal that’s as good for you as it is visually stunning.

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