Creamy Baked Scalloped Potatoes with Garlic and Cheese

This scalloped potatoes recipe offers a simple, wholesome vegan twist on the classic warm, creamy, and slightly crusty casserole.

It’s potato harvest season here, and although there are countless ways to prepare potatoes, this dish is one of our favorites when we want something a little more elegant. It works equally well as a main for a cozy dinner or as a hearty side dish.

vegan scalloped potatoes recipe

The Sauce that Brings this Recipe Together

If you have an abundance of potatoes (or are simply a potato fan), this casserole is an excellent way to use them. Potatoes are layered throughout the dish and also form the base of the dairy-free “cheese” sauce, so they play a starring role.

The potato “cheese” sauce replaces the typical milk, butter, flour, and cheese used in traditional scalloped potatoes or potato au gratin. It acts as an all-in-one swap, keeps the recipe gluten-free, and gives the casserole a rich, creamy texture without dairy.

Make the sauce before assembling the dish (there’s a reference to the sauce in the recipe card). Once the sauce is ready, assembly is quick: alternate thin potato slices, onions, and the sauce, then bake until golden and bubbling.

scalloped potatoes (vegan, gluten-free)

Add-Ons and Recipe Variation Ideas

Part of this recipe’s charm is its simplicity and adaptability. The base ingredients produce delicious results as written, but there are plenty of easy variations if you want to experiment:

  • For more depth of flavor, sprinkle garlic powder or granules into the layers along with salt and pepper.
  • If you prefer heat, add chili powder, cayenne, or a Cajun spice blend to the layers.
  • Fresh herbs lift the dish—try a little chopped rosemary or a generous amount of dill between layers.
  • To amplify the cheesy aspect, add vegan parmesan or shreds of a bold-flavored vegan cheese into the layers.
  • For a heartier, “meaty” version, scatter vegan bacon bits or diced deli-style vegan slices between layers.
  • For a subtle smoky note, add a drop or two of liquid smoke to the potato “cheese” sauce.

The structure is forgiving: soft-baked potatoes provide the dish’s base, onions add moisture and sweetness, the sauce supplies creaminess, and salt and pepper tie the flavors together. Beyond that, there’s lots of room to make it your own.

vegan potato au gratin

Quick Notes on Dish Size and Baking

This recipe scales easily up or down to suit your needs.

Casseroles are flexible in shape; any ovenproof dish will work so long as you adjust ingredient quantities to fit. Keep in mind that deeper or larger dishes will need more baking time. If the dish is very deep, the center may take longer to cook even when the top looks done.

We typically use a 2″ deep dish (the one pictured), which lets the potatoes cook through in the stated time. If you use a different size or depth, keep an eye on the bake: look for a golden, crisp top with some blistering and bubbling. Test doneness by inserting a toothpick into the center—if it slides through easily, similar to a cooked boiled potato, the casserole is ready. If the center feels firm or undercooked, return it to the oven for additional time.

plant-based scalloped potatoes (grain-free)

Scalloped Potatoes

easy vegan scalloped potatoes

This scalloped potatoes recipe is a simple, wholesome vegan take on the traditional warm, creamy yet deliciously crusty classic casserole.

  • Author: Audrey @ Unconventional Baker
  • Prep Time: 20 minutes
  • Cook Time: 40 minutes
  • Total Time: 1 hour
  • Yield: 4–6 servings (as a side)
  • Category: savory
  • Method: baked
  • Cuisine: vegan
  • Diet: Vegan

Ingredients

  • 385 gr potatoes, sliced into thin rounds
  • 1 medium-small onion, sliced into thin rounds
  • 1 ½ cups vegan potato “cheese”
  • Salt & pepper, to taste
  • Optional: vegan butter or baking oil to very lightly oil the baking dish
  • Optional: ketchup for serving

Instructions

1. Preheat the oven to 375°F (190°C). Lightly oil or butter a medium-small casserole dish. Note: an 8″ x 6″ x 2″ (6-cup / 1.5L) oven-safe dish works well, but any similar-sized dish is fine. Set aside.

2. Arrange a thin layer of potato slices along the base of the dish.

potatoes layer

Lightly season with salt and pepper (a few twists of a grinder work well). Spoon some of the potato “cheese” sauce over the potatoes to coat them evenly.

3. Spread a layer of sliced onions over the sauce.

onions layer

Season lightly with salt and pepper and top with a thin layer of the “cheese” sauce.

4. Continue layering potatoes, salt & pepper, and the “cheese” sauce, adding remaining onions into the layers if desired. Fill the pan, finishing with a top layer of potatoes and a final coating of sauce.

5. Bake in the preheated oven for about 40 minutes, until the top is golden and crisp and the casserole is bubbly. Remove from the oven and let cool on a rack for a few minutes before serving. Serve with ketchup if you like. Enjoy!

Notes

*You can skip oiling the dish—if using an oven-safe glass dish the casserole often releases with minimal sticking thanks to the creamy sauce. Lightly oiling or buttering the dish gives a slightly richer flavor and makes cleanup easier, but it is optional.

**Refrigerate any leftovers and reheat before serving.

Did you make this recipe?

Tag @unconventionalbaker on Instagram and use the hashtag #unconventionalbaker