Roasted Sweet Potatoes and Red Onions with Feta

You could have these Roasted Sweet Potatoes and Red Onions with Feta for Thanksgiving, but I’d happily eat this for a Meatless Monday main dish. Use Sweet Potatoes to find more recipes like this one.

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Roasted Sweet Potatoes and Red Onions with Feta [found on]

I realize these Roasted Sweet Potatoes with Red Onion and Feta may be a tough sell with some people who love sugary sweet potato casserole, but I loved them and so did my nephew/cooking assistant Jake who never used to like sweet potatoes at all.  I’ve been trying out savory sweet potato recipes for a few years now, and somewhere along the way Jake realized he *does* like sweet potatoes when they aren’t topped with brown sugar/and or mini-marshmallows.

I also think that roasting the sweet potatoes is a wonderful trick to bring out their natural sweetness, and combining them with something salty like Feta cheese gives that wonderful salty-sweet combination that is so appealing.  I’m adding this to the Thanksgiving Recipes on the blog, but quite seriously, I’d also be very happy with a big dish of this for a Meatless Monday dinner as well.

Roasted Sweet Potatoes and Red Onions with Feta found on

How to Make Roasted Sweet Potatoes and Red Onions with Feta:

(This is just a summary of the steps in the photos; scroll down for complete recipe.)

  1. Cut up two large sweet potatoes into pieces that are about 1 inch square.
  2. Cut the red onions into pieces that are the same size (or next time I might make them slightly bigger than the sweet potaotes.)
  3. Toss sweet potatoes and onions with 2 tablespoons of olive oil and 1 tablespoon of my seasoning for Spicy Sweet Potato Fries.
  4. Spread the sweet potatoes and onions out on a baking sheet that you’ve sprayed with non-stick spray or misted with olive oil.  (Blogger FAIL, I cooked these about 10 minutes before I realized I hadn’t taken a photo.)  If they seem crowded at all, use two baking sheets.
  5. Flip them over a few times while they’re cooking; this is how mine looked after about 25 minutes roasting time; this was the second time I turned them.
  6. I roasted mine about 40 minutes total, but depending on your oven and how big the pieces are, you might need a few minutes more.
  7. Season with salt and fresh ground black pepper, sprinkle with Feta, and serve hot.

Roasted Sweet Potatoes and Red Onions with Feta [found on]

More Tasty Ideas for Roasted Sweet Potatoes:

Spicy Sweet Potato Fries ~ Kalyn’s Kitchen
Roasted Parmesan Sweet Potatoes ~ Teenie Cakes
Roasted Sweet Potatoes and Mushrooms with Thyme and Parsley ~ Kalyn’s Kitchen
Roasted Sweet Potatoes with Chinese 5-Spice Powder ~ Cookin’ Canuck
Vegan Farro and Roasted Sweet Potato Salad with Pine Nuts and Tahini-Sumac Vinaigrette ~ Kalyn’s Kitchen

Roasted Sweet Potatoes and Red Onions with Feta

Roasted Sweet Potatoes and Red Onions with Feta would be a great addition  for Thanksgiving, but I’d happily eat this for a meatless main dish as well.


  • 2 large orange-fleshed sweet potatoes (sometimes called yams in U.S. grocery stores), cut in 1 inch cubes
  • 2 small red onions, cut into pieces just larger than 1 inch
  • 2 T olive oil (or slightly more, enough to coat all the veggies with oil)
  • 1 T seasoning for Spicy Sweet Potato Fries (see link for recipe below)
  • 1/3 cup Feta cheese


  1. Preheat oven to 450F/230C.
  2. Peel sweet potatoes and cut into cubes about 1 inch square.
  3. Peel red onions and cut into pieces slightly over 1 inch square.
  4. Put sweet potatoes and onions into a bowl and toss with 2 tablespoons olive oil (or slightly more if you need it to get all the veggies coated with olive oil.)
  5. Sprinkle 1 tablespoon seasoning for Spicy Sweet Potato Fries over the veggie mixture and toss until all the vegetables are coated with the seasoning mix.
  6. Spray a large baking sheet with non-stick spray or mist with olive oil.
  7. Spread the vegetables out on the baking sheet (use two baking sheets if they’re even slightly crowded.)
  8. Roast about 15 minutes, then flip them over with a turner, roast 15 minutes more, then flip them over again.
  9. Roast 10-20 minutes more, or until the sweet potatoes and onions are both nicely browned and sweet potatoes are soft.  (They don’t get very crisp, but there should be some browning on the edges.)
  10. Total roasting time will be 40-50 minutes, depending on the size of the sweet potatoes, your pan, and the oven.
  11. Season with salt and fresh-ground black pepper as desired, sprinkle with crumbled Feta, and serve hot!


Recipe created by Kalyn.

All images and text ©

Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
Sweet potatoes are a great carb-conscious choice for Phase 2 or 3 of the South Beach Diet, but if you’re actively trying to lose weight on Phase 2, I would eat Roasted Sweet Potatoes and Red Onions with Feta as a side dish with lower carb choices for the rest of the meal. This is good for low-glycemic diets, but too high in carbs for low-carb eating plans.

Find More Recipes Like This One:
Use the Diet Type Index to find recipes suitable for a specific eating plan. You can also Follow Kalyn’s Kitchen on Pinterest to see all the good recipes I’m sharing there.

Nutritional Information?
If you want nutritional information for a recipe, you can sign up for a free membership with Yummly and use the Yum button on my site to save the recipe and see the nutritional information. Another option is entering the recipe into this Recipe Nutrition Analyzer, which will calculate it for you.

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