This 4-ingredient oven sliced sweet potato dish is my go-to when I need something cozy and ridiculously easy after a long workday. You literally layer raw sweet potato rounds in a glass baking dish, drizzle on three pantry staples, and let the oven do all the work. The edges get caramelized, the centers turn tender and buttery, and it smells like you spent way more time in the kitchen than you actually did. It’s not a traditional family recipe from anywhere specific—just a practical, Midwest weeknight staple that tastes like comfort and goes with almost anything.
Serve these sweet potato rounds straight from the glass baking dish with roasted chicken, pork chops, or a simple skillet sausage for an easy weeknight dinner. They’re also great alongside a big green salad or steamed broccoli when you want to keep things lighter. I like to scoop them into bowls and top with a dollop of Greek yogurt or sour cream and a sprinkle of chopped green onions if I have them. Leftovers reheat well and make an awesome base for a quick lunch bowl with leftover protein and some greens.
4-Ingredient Oven Sliced Sweet PotatoesServings: 4
Ingredients
2 large sweet potatoes (about 1 1/2 pounds total), scrubbed and sliced into 1/4-inch thick rounds
3 tablespoons olive oil
1 teaspoon kosher salt
1 teaspoon garlic powder
Directions
Preheat your oven to 400°F (200°C). Grab a deep glass baking dish (around 8x8 inches or similar) and set it aside. No need to grease it separately since we’ll be adding oil.
Scrub the sweet potatoes well under running water and pat them dry. Leave the skins on for extra texture and nutrients. Slice them into 1/4-inch thick rounds, trying to keep the slices as even as you can so they cook at the same rate.
Lay the raw sweet potato rounds in the glass baking dish in slightly overlapping layers, like you’re making a simple, rustic potato gratin. It doesn’t have to be perfect—just aim for a mostly even layer that fills the dish.
Drizzle the olive oil evenly over the sweet potato rounds. Use your hands or a spoon to gently toss and spread the oil so both the tops and some of the sides of the slices get coated. Smooth them back into an even, overlapping layer once coated.
Sprinkle the kosher salt and garlic powder evenly over the oiled sweet potato rounds. Try to cover as much surface area as possible so every bite is seasoned. If you like, lightly press the seasonings in with clean fingers so they stick to the slices.
Cover the glass baking dish tightly with foil. This helps the raw sweet potato rounds steam a bit first so they soften all the way through. Place the covered dish on the middle rack of your preheated oven and bake for 25 minutes.
After 25 minutes, carefully remove the foil (watch for steam). Use a spatula to gently loosen any slices that may be sticking and tilt the dish slightly to spoon some of the seasoned oil over the tops of the rounds. Spread the slices back into an even layer.
Return the uncovered dish to the oven and bake for another 20–25 minutes, or until the sweet potato rounds are very tender in the center and the edges are lightly browned and caramelized. A fork should slide through the thickest slice easily.
Once done, remove the dish from the oven and let the sweet potatoes rest for about 5 minutes. This helps them firm up just enough so they’re easier to scoop and serve. Taste and add a pinch more salt if needed, then bring the glass baking dish right to the table and serve warm.
Variations & Tips
You can easily change the flavor of these sweet potato rounds without adding extra ingredients beyond the three pantry items. For a slightly sweeter vibe, swap the garlic powder for 1 teaspoon of ground cinnamon and keep the olive oil and salt the same—this gives you a cozy, almost dessert-like side dish. If you like a little heat, use 3/4 teaspoon garlic powder and 1/4 teaspoon chili powder or smoked paprika in place of the full teaspoon of garlic powder. For extra crisp edges, spread the slices out so they overlap a bit less and bake uncovered for the last 5–10 minutes, watching closely so they don’t burn. Meal-prep tip: Slice the sweet potatoes the night before and store them in an airtight container in the fridge; they may darken slightly but will cook just fine. Food safety: Always scrub sweet potatoes well to remove any dirt, and cut away any bruised or moldy spots before slicing. Use a sharp knife and a stable cutting board to avoid slipping while cutting the rounds. If your glass baking dish has been in the fridge, let it come closer to room temperature before going into a hot oven to reduce the risk of thermal shock. Refrigerate leftovers within 2 hours of baking and reheat thoroughly in the oven or microwave before eating.
