Healthy Sweet Potato Casserole

This Healthy Sweet Potato Casserole is a family favorite—a comforting holiday side that delivers the same cozy flavor as traditional versions but without refined sugar. It features naturally sweetened mashed sweet potatoes and a crunchy pecan-oat streusel on top for the perfect balance of creamy and crisp.

Why You’ll Love This Healthy Sweet Potato Casserole

• Naturally sweetened: Maple syrup (and a touch of coconut sugar in the topping) replace refined sugars while still delivering a satisfying sweetness.
• Wholesome ingredients: Sweet potatoes are rich in fiber, vitamin A, vitamin C and antioxidants, making this a nourishing side dish.
• Pecan streusel topping: A crunchy mix of oats, oat flour, chopped pecans and butter (or coconut oil) gives texture and nutty flavor without marshmallows.
• Meal-ready: Great for Thanksgiving, holiday dinners, or any weeknight when you want a tasty, healthier side that feeds a crowd.

Ingredients You’ll Need

• Sweet potatoes: 4 to 5 large sweet potatoes, peeled and cubed (about 8 cups cooked).
• Eggs: 2 large eggs to bind and add moisture.
• Milk: 1/3 cup milk (almond, dairy, or your preferred milk) to make the mash silky.
• Maple syrup: 1/4 cup maple syrup to naturally sweeten the filling (honey or another natural sweetener can be substituted).
• Butter or oil: 4 Tbsp butter, coconut oil, or ghee for richness.
• Vanilla: 2 tsp vanilla extract to enhance the flavor.
• Spices: 1 tsp ground cinnamon and a pinch of nutmeg for warm holiday spice.
• Salt: 1/2 tsp salt to balance and amplify the flavors.
• Pecan streusel topping: 1/4 cup oat flour, 1/3 cup rolled oats, 1/3 cup coconut sugar, 1/2 cup chopped pecans, and 3 Tbsp butter (or substitute coconut oil) for a crunchy finish.

How to Make Healthy Sweet Potato Casserole

1. Boil the sweet potatoes. Peel and cut the sweet potatoes into roughly 2-inch chunks. Place them in a large pot of salted water, bring to a boil, then reduce to a simmer. Cook until very tender, about 15–20 minutes, then drain thoroughly.
2. Mash the potatoes. Transfer the drained potatoes to a large bowl and mash with a potato masher or fork. Add the eggs, maple syrup, milk, butter, vanilla, cinnamon, nutmeg and salt. Mix until smooth using a handheld mixer or stand mixer. Add a splash more milk if you prefer an extra creamy texture.
3. Prepare the pecan streusel topping. In a medium bowl, combine the oat flour, rolled oats, coconut sugar, chopped pecans and butter. Use a pastry blender, fork, or your fingers to work the mixture into pea-sized crumbles.
4. Assemble the casserole. Spread the mashed sweet potatoes into a 9×13-inch or 9×9-inch baking dish coated with nonstick spray or lightly greased. Evenly sprinkle the oat-pecan streusel over the top.
5. Bake. Preheat the oven to 350°F (175°C). Bake the casserole for 30–35 minutes, until the topping is crisp and lightly browned and the filling is heated through. Serve hot.

Tips for Prepping Ahead

This casserole is easy to prepare ahead to reduce holiday stress:

• Prep mashed sweet potatoes 1–3 days ahead: Peel, boil and mash the potatoes with all filling ingredients, then store in an airtight container in the refrigerator for up to 3 days. When ready, spread in the baking dish, add the streusel and bake.
• Assemble whole casserole ahead: You can assemble the entire dish (including topping), cover tightly and refrigerate for 24–48 hours before baking. Let it sit at room temperature about 20 minutes before baking for more even heating.
• Keep components separate: Store the filling and topping separately in the fridge to keep the streusel crunchy when you bake.
• Freeze for long-term storage: The casserole freezes well for up to 3 months. Thaw overnight in the refrigerator before baking.

How to Store

Store leftovers in a sealed airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave or warm the entire casserole in a 325°F (165°C) oven for 15–20 minutes until heated through.

Nutrition (Approximate)

Per serving (1/8 of recipe): about 358 kcal, 46 g carbohydrates, 6.3 g protein, 17.6 g fat, 7.4 g saturated fat, 73 mg cholesterol, 147 mg sodium, 5.4 g fiber, 9.8 g sugar. Nutrition is an approximation and will vary based on exact ingredients and portion sizes.

Serving Suggestions

Serve this casserole alongside roasted turkey or glazed ham, with green beans, stuffing or a crisp winter salad. The sweet, spiced mash and crunchy pecan topping pair well with savory mains and bright, tangy sides.

Enjoy this healthier take on a holiday classic—rich, comforting, and made with wholesome ingredients that keep the spirit of the season without refined sugar.