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Sweet Potato Gratin

Savory Sweet Potato Gratin That Will Melt Your Heart

This Sweet Potato Gratin is a savory, cheesy dish perfect for festive gatherings and cozy dinners.
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Prep Time 20 minutes
Cook Time 1 hour 5 minutes
Resting Time 15 minutes
Total Time 1 hour 40 minutes
Servings: 8 slices
Course: Dinner
Cuisine: American
Calories: 320
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Gratin
  • 3 large Sweet Potatoes thinly sliced
  • 4 tablespoons Butter can substitute with olive oil
  • 3 cloves Garlic minced
  • 1 medium Red Onion finely chopped
  • 0.25 cup All-Purpose Flour can use cornstarch for gluten-free
  • 2 cups Heavy Cream can substitute with half-and-half
  • 1 tablespoon Fresh Rosemary or dried as substitute
  • 1 teaspoon Smoked Paprika or regular paprika
  • 1 teaspoon Ground Sage or thyme as alternative
  • 1 teaspoon Kosher Salt
  • 1 teaspoon Black Pepper
  • 0.25 teaspoon Nutmeg
  • 1 cup Asiago Cheese shredded
  • 1 cup Smoked Gouda Cheese shredded
  • 0.5 cup Colby Jack Cheese shredded

Equipment

  • medium saucepan
  • 9x13 baking dish
  • mandoline or sharp knife

Method
 

Step-by-Step Instructions for Sweet Potato Gratin
  1. Preheat your oven to 400°F (200°C).
  2. Melt 4 tablespoons of butter in a medium saucepan over medium heat, then add 3 cloves of minced garlic and one finely chopped red onion. Sauté for 3-4 minutes until the onion is translucent.
  3. Sprinkle in ¼ cup of all-purpose flour and stir for 1 minute. Gradually whisk in 2 cups of heavy cream and ½ cup of half-and-half, cooking until thickened.
  4. Mix in 1 cup of shredded Asiago cheese, 1 tablespoon of fresh rosemary, 1 teaspoon of smoked paprika, 1 teaspoon of ground sage, and season with salt, pepper, and nutmeg. Stir to create a sauce.
  5. Thinly slice 2-3 large sweet potatoes to about ⅜ inch thickness and arrange them for layering.
  6. Grease a 9"x13" baking dish and arrange the sweet potato slices, or toss with the creamy cheese sauce.
  7. Stir in half of the remaining cheese into the sauce and pour it over the sweet potato layers.
  8. Top with remaining cheese and cover with aluminum foil.
  9. Bake for 45-50 minutes until potatoes are tender. Remove foil and bake for another 15-20 minutes for a golden-brown finish.
  10. Let the gratin rest for 10-15 minutes before serving.
  11. Serve alongside your favorite main dish.

Nutrition

Serving: 1sliceCalories: 320kcalCarbohydrates: 35gProtein: 9gFat: 18gSaturated Fat: 10gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gCholesterol: 45mgSodium: 700mgPotassium: 550mgFiber: 4gSugar: 3gVitamin A: 18000IUVitamin C: 5mgCalcium: 250mgIron: 1.5mg

Notes

Ensure slices are uniform for even cooking. Cool the sauce before adding cheese to prevent clumps.

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