Dairy-Free Scalloped Potatoes with Sweet & Red Potatoes

QUICK SUMMARY

These dairy-free scalloped potatoes layer thin-sliced sweet and red potatoes and onions with a creamy white sauce made from full-fat coconut milk, gluten-free flour, and sea salt. Bake uncovered at 325°F for about 2 hours, until a fork slides clear through to the bottom of the dish. Use coconut oil instead of butter and the whole casserole is dairy-free.

This easy dairy-free scalloped potatoes recipe gives you tender sweet and red potatoes layered with a creamy coconut-milk white sauce. It is naturally easy to make gluten-free, and if you use coconut oil instead of butter, it is completely dairy-free.

The original recipe came from an ever-so-popular classic cookbook. Our lovely family friend adapted it for their needs, and of course, I adapted it for ours!

Tender potatoes topped with a creamy white sauce…what could be better? I use a mix of organic sweet and red potatoes because we love the color, texture, and flavor combination.

Gene’s Easy Scalloped Potatoes (With Vegan Option)

Author Mama Z

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Servings

2x4x6x

Ingredients

Potatoes

• 8 cups combination organic red AND sweet potatoes, pared and thinly sliced
• 2 tablespoons organic dried minced onion OR 3 tablespoons fresh

White Sauce

• 4 tablespoons grass-fed organic sea-salted butter OR 4 tablespoons coconut oil extra-virgin AND unrefined AND a pinch of pink Himalayan salt OR sea salt, ground
• 3 tablespoons gluten-free all-purpose flour
• 2 teaspoons pink Himalayan salt OR sea salt, ground
• 4 cups organic full-fat unsweetened coconut milk

Supplies

• Small pot
• 9 x 13-inch pan

Instructions

 

• Preheat the oven to 325°F. Peel the red and sweet potatoes and slice them into thin slices. Combine the potatoes, so each type is evenly distributed.
• In a small pot over low heat, melt the butter. Add the flour, sea salt, and coconut milk. Bring to a simmer and let cook until thickened. Immediately take off the heat.
• Place half the potatoes in a 9 x 13-inch pan. Top with half the onions and half the sauce. Repeat the layers. Bake uncovered for 2 hours or until you can stick a fork clear through the potatoes to the bottom of the casserole dish.

Notes

Whenever possible, we recommend using organic, non-GMO ingredients.

Benefits of Sweet Potatoes

Sweet potatoes are an affordable root vegetable with a naturally sweet flavor that works in savory dishes, breakfast recipes, and even desserts. They are especially known for fiber, carotenoids, potassium, and vitamin A activity from beta-carotene.

Healthy Source of Carbohydrates

In a sea of diet culture that eliminates food groups, allow us to be a voice of reason and say that carbohydrates AND fats can both be part of a thriving, whole-food diet.

Sweet potatoes contain fiber, and their glycemic response varies substantially with the variety and how they are cooked. In a small 2011 human study comparing ten sweet-potato cultivars, boiled sweet potatoes had a much lower glycemic index than baked or roasted versions.

In other words, it is too simplistic to say that every sweet potato is automatically easier on blood sugar than every white potato. (1)

For this casserole, enjoy the sweet and red potato combination for what it is: a nourishing, satisfying side dish. If blood sugar is a concern for you, portion size and the rest of the meal matter too.

Antioxidants & Protective Plant Compounds

Sweet potatoes contain carotenoids, phenolic compounds, and other antioxidants that help protect cells from oxidative stress.

A 2022 review notes that, depending on the variety, sweet potatoes are rich in carotenoids, polyphenols, vitamin C, resistant starch, and bioactive proteins. Those compounds may help protect against certain cancers and cardiovascular disorders. (2)

Most of that evidence comes from laboratory and animal research.

That is still a good reminder that whole foods contain far more than calories and carbohydrates. They provide a complex mixture of nutrients and plant compounds that belong in an overall healthy diet. That is the kind of food God designed to nourish us.

Rich in Beta-Carotene

Beta-carotene is responsible for much of the lovely orange color in orange-fleshed sweet potatoes. Your body can convert beta-carotene into vitamin A.

Vitamin A is essential for normal vision, immune function, reproduction, growth, and development. The NIH lists baked sweet potato as one of the richest common food sources of vitamin A activity. (3)

That is one of the reasons I love mixing sweet potatoes into familiar comfort-food recipes like this one.

Healthy Potato Ingredients 101

How do you create dairy-free scalloped potatoes that are creamy and delicious? The answer is simple: a few clever swaps and high-quality ingredients.

Organic Potatoes: The trick to perfect scalloped potatoes is to peel them and slice them thin. This helps them cook evenly and gives the casserole that classic tender texture. You can use a food processor set on the thin-slice option to make this easier.

Organic Chopped Onions: We talk often about the benefits of cruciferous vegetables, but onions belong to a different plant family: the Allium family, along with garlic, leeks, and shallots. Allium vegetables contain organosulfur compounds and flavonoids such as quercetin.

Human observational research has explored whether higher Allium intake is associated with lower cancer risk. A 2022 meta-analysis found that people who ate the most garlic had about 25% lower odds of colorectal cancer and 35% lower odds of stomach cancer. (4)

Onions have less evidence behind them. A 2014 meta-analysis found the onion-specific estimate for colorectal cancer was not statistically significant, so we would not say onions themselves “lower your chances of getting cancer.” (5)

Healthy Fat: We love using grass-fed butter in this recipe, but if you want the dish to be genuinely dairy-free, use coconut oil. We’ve used both options with success. The fat helps create the rich white sauce that makes scalloped potatoes so comforting.

Gluten-Free All-Purpose Flour: Instead of white wheat flour, we use gluten-free flour. It thickens our white sauce just as well as traditional flour. If you are cooking for someone with celiac disease or a medically necessary gluten-free diet, use a flour blend labeled gluten-free and watch for cross-contact in the kitchen.

Pink Himalayan Salt or Sea Salt: Sodium is an essential mineral, and salt is the main source of sodium in most diets. We enjoy Colima sea salt for its flavor and traditional hand-harvested preparation. If you don’t have sea salt, you can use pink Himalayan salt.

Specialty salts may contain trace minerals, but those amounts are generally too small to make them a meaningful mineral supplement. Iodized table salt also has one advantage many specialty salts do not: added iodine, an essential nutrient for thyroid function.

Organic Full-Fat Unsweetened Coconut Milk: Coconut milk is a wonderful, decadent substitute for dairy. It creates a creamy white sauce that thickens beautifully! When purchasing coconut milk, be sure to grab the full-fat kind. The “lite” variety doesn’t contain the same richness from coconut cream.

Make Easy Scalloped Potatoes

This recipe is easy to prep! It does require a couple of hours to cook, but that’s fine by me. I have no problems with my oven doing the heavy lifting! This side dish serves 3-6 people, generously!

Step One: Prepare the Potatoes

Preheat the oven to 325°F. Peel the red and sweet potatoes and slice them into thin slices. Combine the potatoes so each type is evenly distributed.

Step Two: Make the White Sauce

In a small pot over low heat, melt the butter. Add the flour, sea salt, and coconut milk. Bring to a simmer and let cook until thickened. Immediately take off the heat.

Step Three: Layer the Potatoes and Sauce

Place half the potatoes in a 9 x 13-inch pan. Top with half the onions and half the sauce. Repeat the layers. Bake uncovered for 2 hours or until you can stick a fork clear through the potatoes to the bottom of the casserole dish.

If you want your casserole to bake even faster, you can divide it between two 9 x 13-inch pans so your potatoes are cooking in a thinner, single layer. Once the potatoes are softened (about one hour) then you can place all the potatoes in one pan, clean the extra empty pan, and arrange all the potatoes back into the clean pan for final presentation. Put it back into the oven (or warmer) for the last 10 minutes if you want a nice crisp top to your potato casserole.

Want more healthy holiday recipes? Check out this list that contains all of our favorites! You’ll find appetizers, drinks, main dishes, and of course, dessert! These recipes are free of sugar, gluten, and dairy, but not free of flavor!

Keep reading: Oven-Baked Herb Roasted Potatoes Recipe · Gluten-Free Stuffing: Thanksgiving Dressing All Year Round · Fresh 4 Bean Salad Recipe with Sweet & Tangy Dressing