Healthy Sweet Potato Casserole with Pecan Topping (Gluten-Free)

This sweet potato casserole is a lighter take on the holiday classic, with 227 calories, 4 grams of fiber, and just 136 mg of sodium per ½-cup serving. Fresh sweet potatoes are naturally rich in vitamin A and potassium, and we skip the marshmallows and use a modest amount of brown sugar in the topping. The pecans add crunch along with heart-healthy fats.

Traditional sweet potato casserole is often loaded with marshmallows, butter, and sugar, but this lighter version was approved by our registered dietitians for a diabetic diet. Each ½-cup serving has 24 grams of carbs, 11 grams of sugar, and 4 grams of fiber. The pecans add healthy fats that help slow down how quickly those carbs are absorbed. If you’re managing diabetes, stick to a ½-cup portion, count it as one of the carb servings in your meal, and pair it with lean protein like turkey and non-starchy vegetables like green beans.

This sweet potato casserole is naturally gluten free, so it’s a safe choice for people with celiac disease. Sweet potatoes don’t contain gluten, and the pecan topping is made with almond flour in place of wheat flour. Many traditional recipes use all-purpose flour in the topping, so it’s worth checking if you’re not making it yourself. For anyone with celiac disease, look for almond flour labeled “gluten free,” and if you use our nut-free oat topping, choose oats labeled “certified gluten free,” since regular oats are often processed alongside wheat.

Our pecan topping takes just 5 ingredients and a few minutes to mix. In a small bowl, combine 1 cup of chopped pecans, ½ cup of packed dark brown sugar, ⅓ cup of almond flour, ¼ cup of melted unsalted butter, and 2 teaspoons of vanilla extract until it’s crumbly. Sprinkle it over the casserole after the first 25 minutes of baking, then bake for 15 to 20 more minutes until it’s golden brown.

You can make this sweet potato casserole up to 1 day ahead, which frees up your oven on Thanksgiving. Prepare the sweet potato mixture, spread it in the baking dish, cover it tightly, and refrigerate it. Mix the pecan topping and store it in a separate covered container in the fridge so it stays crunchy. When you’re ready to bake, add the topping at the usual time and give the casserole an extra 5 to 10 minutes in the oven, since it’s going in cold. You can also bake and mash the sweet potatoes up to 2 days ahead to save even more time.

Sweet potato casserole freezes well for up to 3 months, and it’s best to freeze the filling and topping separately. Bake the sweet potato mixture without the topping, let it cool completely, then wrap the dish tightly in plastic wrap and foil. Store the topping in a freezer bag. Thaw both in the fridge overnight, sprinkle on the topping, and bake at 350°F for 30 to 35 minutes, until the casserole is heated through and the topping is golden brown. You can freeze leftovers with the topping already on, but the pecans will lose some of their crunch.

A few simple steps make the difference between a fluffy, golden casserole and a soggy one:

• Let the baked sweet potatoes cool before adding the eggs, so the eggs don’t start to scramble.
• Beat the mashed sweet potatoes with a hand mixer for 3 to 4 minutes to make the casserole light and fluffy.
• Add the topping partway through baking, since it can burn if it’s in the oven the whole time.
• If you use canned yams, choose ones packed in water or drain and rinse them well, since heavy syrup makes the casserole overly sweet and watery.
• Let the casserole rest for 20 to 30 minutes before serving so it can set.