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A serving spoon lifting a serve of Savoury Sweet Potato Casserole in a ceramic baking dish, with bread on the side
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Savoury Sweet Potato Casserole

Comfort food at its finest. Soft creamy sweet potato mash encrusted with a crunchy maple walnut breadcrumb topping, this savoury sweet potato casserole recipe is one to share at family dinners or festive holiday celebrations.
Course Side Dish
Cuisine American
Diet Vegetarian
Dietary Egg Free, Vegetarian
Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings 4 people
Calories 725kcal
Author Sammy Eng

Ingredients

Sweet Potato Mash

  • 2 kg sweet potato
  • 4 tbsp butter room temperature
  • 2 cloves garlic minced
  • ⅓ cup sour cream
  • 2 tbsp flat leaf parsley chopped
  • salt to taste
  • pepper to taste

Walnut Breadcrumb Topping

Metric - US Customary

Instructions

  • Preheat oven to 180°C or 350°F.
  • Cut sweet potatoes into small cubes. Place sweet potato cubes into a large pot and cover with water. Boil until sweet potatoes are soft and fork tender. This will take approximately 10-15 minutes.
  • Drain water from cooked sweet potatoes. Make sure there is no excess water in the pot.
  • Start mashing sweet potatoes with a potato masher until desired consistency.
  • Whilst still warm, add butter and minced garlic to sweet potatoes. Mix into mashed sweet potatoes.
  • Pour sour cream into mixture and stir in.
  • Scatter with ½ chopped parsley and season well with salt and pepper.
  • Scoop sweet potato mash into a lightly greased baking dish.
  • In a small mixing bowl, add chopped walnuts, breadcrumbs and chopped parsley, maple syrup and extra virgin olive oil. Season with salt and then mix together.
  • Scatter maple walnut breadcrumb mix on top of sweet potato mash. Spread out evenly.
  • Bake in preheated oven for 25-30 minutes until the top is golden brown and the edges are bubbling.
  • Serve warm.

Video

Notes

  • For vegan sweet potato casserole, use vegan butter and sour cream to create a creamy texture. 
  • Substitute sour cream with cream, milk, creme fraiche, Greek yoghurt or a combination. 
  • Try these variations: 
    • bacon bits
    • grated parmesan cheese
    • shredded gruyere cheese
    • crispy sage
    • fresh rosemary 
    • chopped pecans
  • If you prefer a smoother consistency in the sweet potato mash, use an immersion blender or food processor to help mash.

Nutrition

Calories: 725kcal | Carbohydrates: 115g | Protein: 12g | Fat: 26g | Saturated Fat: 6g | Polyunsaturated Fat: 8g | Monounsaturated Fat: 10g | Cholesterol: 11mg | Sodium: 498mg | Potassium: 1814mg | Fiber: 16g | Sugar: 26g | Vitamin A: 71810IU | Vitamin C: 17mg | Calcium: 216mg | Iron: 4mg