Sweet Potato Casserole With Sourdough Topping

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One of my favorite ways to use sweet potatoes is in this delicious sweet potato casserole. Topped with a mouthwatering sourdough discard topping, flaky coconut, dark brown sugar, golden melted butter, and toasty pecans, this dish is irresistible and makes a perfect option for a holiday treat, a potluck, or as a main course or side dish for supper. 

I started making this recipe many years ago for Thanksgiving dinner, and people always ask for it every year without fail.  I changed the recipe to include sourdough discard in the topping instead of just plain flour.  That makes it healthier because the flour will be long-fermented in the sourdough starter, and easier to digest, especially if you are gluten-intolerant.

sweet potato casserole

Quick Look: Sweet Potato Casserole With Sourdough Topping

  • ⏱️ Prep Time: 1 hour
  • 🍳 Cook Time: 20 minutes
  • 🕒 Total Time: 1 hour, 20 minutes
  • 👥 Servings: 15
  • 📊 Calories: ~156 kcal per serving (based on nutrition panel)
  • 🔥 Cook Method: Oven-baked in baking dish
  • 👩‍🍳 Flavor Profile: Sweet and savory with creamy sweet potatoes, warm spices, and a slightly tangy, crunchy sourdough topping.
  • Difficulty: Easy – beginner-friendly, mostly assembly and baking.

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baked sweet potatoes

Why You'll Love This Recipe

  • Easy- which makes it a perfect dish to quickly make for a gathering. 
  • Healthy - sweet potatoes are one of the healthiest vegetables, and this recipe is made even more healthy with the sourdough starter added to the topping instead of just regular flour.
  • Delicious- all of the flavors combined make this casserole delectable. 
  • Uses Fresh or Canned Sweet Potatoes - I grow a lot of sweet potatoes every year, so I always just bake up some of those for this casserole, but you can also use store-bought canned sweet potatoes if that's all you have.

Ingredients

  • Sweet potatoes - I grow sweet potatoes in the garden every year, and this casserole is a perfect way to use them up
  • Brown sugar - I really like the flavor that brown sugar gives to this recipe, along with the maple syrup
  • Maple syrup
  • Eggs - farm fresh is always best
  • Heavy cream
  • Vanilla extract - learn how to make your own vanilla extract here - or you can purchase in bulk from Azure Standard
  • Salt - I prefer to use Redmond Real Salt, but use whatever you have available.
  • Butter- My favorite butter is my own homemade butter from our Jersey milk cows, but use whatever butter you like.
  • Sourdough discard-I try to keep my sourdough jar in my refrigerator fairly full of sourdough at all times so I can easily make any kind of discard recipe including this sandwich bread.  I have a full tutorial on how I care for my sourdough starter here.
  • Flaked coconut
  • Pecans 

This post contains affiliate links, which means I make a small commission at no extra cost to you. See my full disclosure here

Tools

  • 9" x 13" baking dish
  • Large bowl or stand mixer
  • Peeler
  • Hand mixer/stand mixer
  • Measuring cups and spoons

How to Make Sourdough Sweet Potato Casserole

Prepare the Sweet Potatoes:

Wash and peel the sweet potatoes. 

peeling sweet potatoes

Bake in a baking dish at 350 degrees until soft, usually 1-2 hours, depending on the size of the potatoes.

Mix the Filling Ingredients:

In a large bowl or stand mixer, combine the sweet potatoes with the rest of the filling ingredients. 

mixing up sweet potato casserole

Mix well with a hand mixer or stand mixer.

Place in 9" x 13" baking dish.

pouring sweet potato casserole into pan

Mix the Topping Ingredients:

In a medium bowl, combine all the topping ingredients and stir gently.

Place on top of filling.

adding sourdough topping to sweet potato casserole

Can be placed in the refrigerator at this point for up to 7 days in an airtight container. 

Bake:

Bake at 350 degrees for 35-40 minutes or until warm and bubbly.

sweet potato casserole

Tips

  • You can also use canned sweet potatoes in this recipe. 
  • Adding mini marshmallows on top can add a fun twist to the recipe

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sweet potato casserole

Sweet Potato Casserole With Sourdough Topping

One of my favorite ways to use sweet potatoes is in this delicious sweet potato casserole. Topped with a mouthwatering sourdough discard topping, flaky coconut, dark brown sugar, golden melted butter, and toasty pecans, this dish is irresistible and makes a perfect option for a holiday treat, a potluck, or as a main course or side dish for supper.
LaRee Colburn
Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Serving Size 15 people

Equipment

  • 1 9" x 13" baking dish
  • 1 Large bowl or stand mixer
  • 1 Peeler
  • 1 Hand mixer/stand mixer
  • 1 measuring cups and spoons

Ingredients

Filling

  • 6 cups baked sweet potatoes
  • 1 cup brown sugar
  • ½ cup maple syrup
  • 4 eggs
  • 1 cup heavy cream
  • 1 teaspoon vanilla
  • pinch of salt
  • ½ cup butter, melted

Topping

  • 1 cup sourdough discard
  • 1 cup brown sugar
  • 1 cup flaxed coconut
  • 1 cup chopped pecans
  • ½ cup butter, melted

Instructions

Prepare the Sweet Potatoes:

  • Wash and peel the sweet potatoes. 
  • Bake in a baking dish at 350 degrees until soft, usually 1-2 hours, depending on the size of the potatoes.

Mix the Filling Ingredients:

  • In a large bowl or stand mixer, combine the sweet potatoes with the rest of the filling ingredients. 
  • Mix well with a hand mixer or stand mixer.
  • Place in 9" x 13" baking dish.

Mix the Topping Ingredients:

  • In a medium bowl, combine all the topping ingredients and stir gently.
  • Place on top of filling.
  • Can be placed in the refrigerator at this point for up to 7 days in an airtight container. 

Bake:

  • Bake at 350 degrees for 35-40 minutes or until warm and bubbly.
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Notes

You can also use canned sweet potatoes in this recipe. 
Adding mini marshmallows on top can add a fun twist to the recipe
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5 from 1 vote

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3 Comments

  1. Was planning to make this, but the recipe omits the topping ingredients and their measurements.