Somebody decided a long time ago that sweet potatoes belong in the dessert half of the meal.
Brown sugar, marshmallows, a shake of cinnamon, and out it comes next to the turkey.
I ate them that way for about twenty years without ever questioning it.
Then a friend put a plate in front of me in her kitchen in January, a split sweet potato, and the whole thing was salty.
Feta, black olives, good olive oil, oregano.
No sugar anywhere near it.
That was four winters ago and I've made them every couple of weeks since.
My wife asks for these more than anything else I cook between October and March.
What I love is that the salt doesn't just sit on top of the potato, it gets mashed all the way through it.
That's the difference between a stuffed potato and a twice-baked one, and it matters more here than almost anywhere else.
The flesh comes out, gets mashed with crumbled feta, chopped kalamatas, sundried tomato and lemon, then goes back into its own skin for a second trip through the oven.
The cheese on top browns at the edges.
The skin firms up into a proper edible bowl instead of going soft.
You need two potatoes and about twenty minutes of real work.
Make them once and the marshmallow version starts to look a little strange!
Stuffed or Twice-Baked? The Difference Matters Here
A stuffed sweet potato is split open and piled with toppings. A twice-baked one is taken apart and put back together. Those are two different dishes and they taste different.
For stuffed, you bake the potato, cut it down the middle, and spoon your filling into the opening.
For twice-baked, you scoop the flesh out into a bowl, mash it with everything, load it back into the empty skins, and bake it a second time.
Why does that matter for feta and olives?
Because feta and olives are the salt in this recipe, and salt sitting in a pile on top gives you two bites that are too strong and four that taste like plain potato.
Mash it through and every forkful is seasoned.
The second bake buys you two more things.
- The skins get firmer. An empty shell back in a hot oven dries out slightly and holds its shape when you cut into it.
- The cheese on top browns. Those brown, slightly crisp edges of feta are the best part and you only get them from a second trip through the heat.
Ingredient Notes
Ten ingredients and eight of them live in the pantry or the door of the fridge. The feta and the olives are the two worth being fussy about.
- Sweet potatoes (2 medium, about 10 ounces each). Buy two the same size so they finish at the same time. Fat and stubby beats long and thin, because you want a shell deep enough to hold the filling.
- Feta (4 ounces, divided). Sheep's milk feta sold in a block in brine. Half goes into the mash and half goes on top. The dry pre-crumbled kind in a tub will not melt into the potato, it just sits there.
- Kalamata olives (⅓ cup, pitted and chopped, plus 6 halves). Chopped fine so the salt spreads. Oil-cured black olives work too and are a little more intense.
- Sundried tomatoes in oil (¼ cup, chopped). These bring the sweet-sour note that keeps the filling from tasting flat. Drain them but don't rinse them.
- Extra virgin olive oil (3 tablespoons, divided). This is the fat in the recipe. No butter, no cream. Use one you'd happily put on bread.
- Garlic (1 small clove, finely grated). Raw and grated on a microplane so it disappears into the warm mash.
- Fennel and coriander seeds (½ teaspoon each, toasted and crushed). Sixty seconds in a dry pan and they smell like a Greek deli. This is the step people skip and then wonder why theirs tastes plainer.
- Dried oregano (1 teaspoon). Dried is genuinely better than fresh here.
- Lemon (zest and juice of ½). Goes in at the very end, off the heat, so it stays sharp.
- Fresh parsley (3 tablespoons, chopped). Flat-leaf, stirred in and scattered over.
Do Sweet Potato and Feta Actually Go Together?
They're one of my favorite pairings and it took me far too long to find it.
Sweet potato is soft, sweet and a bit one-note on its own.
Feta is salty, sour and sharp, which is exactly the three things the potato is missing.
Add olives for a bitter edge and lemon for acid and the dish has all four corners covered.
How to Bake the Sweet Potatoes for Scooping
Bake them past done, not to done. This is a one-section job and then we get to the good part.
Heat the oven to 400°F.
Scrub the potatoes, dry them, and prick each one four or five times with a fork.
Set them straight on the oven rack with a sheet pan on the rack underneath to catch the sugar that leaks out.
Bake 50 to 60 minutes, until a knife slides into the middle with zero resistance.
A potato that's merely tender will not mash smoothly. You want it collapsing.
Fair warning: Let them sit 10 minutes before you touch them. Scooping a screaming hot potato is how you tear the skin and lose your bowl.
How Do I Keep the Skins From Tearing?
Leave a wall of flesh about ¼ inch thick all the way around when you scoop.
Use a regular tablespoon, not a sharp-edged serving spoon, and work from the middle outward.
If one does tear, patch it with a spoonful of the mash and carry on. Nobody at the table will know.
How to Make Mediterranean Twice-Baked Sweet Potatoes
The mash is the recipe, and it comes together while the potatoes are still hot. Have everything chopped before you cut them open.
Step 1: Toast the Fennel and Coriander
Put the ½ teaspoon fennel seeds and ½ teaspoon coriander seeds in a small dry skillet over medium heat.
Shake the pan for 60 to 90 seconds, until they smell nutty and the coriander darkens a shade.
Tip them onto a board and crush them roughly with the flat of a knife or the bottom of a mug.
Worth the extra minute? Every time.
Step 2: Scoop the Potatoes
Cut each potato in half lengthwise.
Scoop the flesh into a bowl, leaving that ¼ inch wall in each shell.
Set the four shells cut side up on a parchment-lined sheet pan.
Step 3: Mash the Filling
Add 2 tablespoons of the olive oil, the grated garlic, the crushed seeds, the 1 teaspoon oregano, ¼ teaspoon salt and ½ teaspoon black pepper to the warm flesh.
Mash with a fork until it's mostly smooth with a little texture left.
Mash it while it's warm. Cold sweet potato will not take up the oil and you'll end up stirring forever.
Fold in half the feta, the chopped olives, the sundried tomatoes and 2 tablespoons of the parsley.
Now stir in the lemon zest and juice and taste it.
Pro tip: Salt last, not first. Feta and kalamatas are both already salty and you can't take it back out.
Step 4: Refill the Shells
Divide the mash between the four shells and mound it gently.
Don't pack it down, a little air keeps the texture light.
Scatter the remaining feta over the tops and tuck the 6 olive halves in among it.
Drizzle with the last 1 tablespoon of olive oil.
Step 5: The Second Bake
Back into the 400°F oven for 15 to 20 minutes.
You're waiting for the feta on top to go from white to golden and blistered at the edges.
Scatter the last tablespoon of parsley over them and serve them hot.
Tips for a Filling That Tastes Mediterranean and Not Like Dessert
Every mistake I've made with these came from treating the mash like a sweet potato casserole. It isn't one.
- No butter, no cream, no milk. Olive oil is the fat and that's the entire point. Dairy pushes it straight back toward the holiday casserole.
- Chop the olives fine. Big pieces mean the salt clumps. You want it evenly distributed through every bite.
- Taste before the salt. Between the feta, the olives and the sundried tomatoes, I usually need only a small pinch.
- Keep the lemon for the end. Zest and juice added to a hot pan lose their edge fast. Off the heat, stirred in last.
- Don't skip the second bake. Fifteen minutes is what turns a bowl of mash into a dish with browned, crisp-edged cheese on top.
Can I Skip the Second Bake if I'm Short on Time?
You can, and you'll have a perfectly good stuffed sweet potato.
What you lose is the browning on the feta and the firmed-up skin.
If you're going that route, at least run them under the broiler for 3 minutes to color the cheese.
Variations
The mash is a solid base and it takes additions well.
- Add chickpeas. A drained can, roasted for 20 minutes with olive oil and oregano, folded into the mash. Turns a side into a full dinner.
- Roasted pepper and red onion. Thinly sliced, roasted alongside the potatoes for the last 25 minutes, then chopped and folded in.
- Chilli and mint. A slivered red chilli and a handful of torn mint instead of the parsley. Sharper and fresher.
- Goat cheese instead. If feta is too salty for your table, a firm goat cheese gives you the same tang with less brine.
- Add a little heat. A pinch of Aleppo pepper stirred into the mash is excellent and doesn't fight the oregano.
Make Ahead, Leftovers and Storage
These were built for making ahead and I do it most weeks.
- Assemble ahead. Bake, scoop, mash and refill up to 2 days in advance. Cover and refrigerate, then run the second bake straight from cold and add 10 minutes.
- Leftovers. Covered in the fridge, 4 days. The flavor honestly improves on day two as the oregano and garlic settle in.
- Reheating. 350°F for 15 minutes, uncovered. The microwave turns the skin limp and rubbery, so I don't use it for these.
- Freezing. Filled halves freeze for 2 months wrapped individually. Be honest with yourself about the texture, the mash comes back slightly wetter. Fine on a Tuesday, not for company.
- The filling alone. Extra mash keeps 3 days and is fantastic spread on toast with an extra crumble of feta.
How to Serve Them
Two halves is dinner, one half is a side. I've served them both ways in the same week.
- Alongside lamb. Roast lamb or grilled lamb chops. This is the pairing that makes the most sense of the oregano and lemon.
- With roast chicken. A plain lemon and garlic chicken and these, and you don't need a third thing.
- As the whole meal. Two halves with a sharply dressed salad, lots of lemon, nothing creamy in the dressing.
- On a mezze table. Cut each half into two pieces and set them out with hummus, olives and warm flatbread.
Make them once and tell me whether you go back to the marshmallows!
Recipe
Mediterranean Twice-Baked Sweet Potatoes With Feta and Olives
Ingredients
For the Potatoes
- 2 medium sweet potatoes about 10 ounces each, scrubbed
- 3 tablespoons extra virgin olive oil divided
For the Filling
- 4 ounces sheep's milk feta crumbled, divided
- ⅓ cup pitted kalamata olives chopped, plus 6 halves for the top
- ¼ cup oil packed sundried tomatoes drained and chopped
- 1 small clove garlic finely grated
- ½ teaspoon fennel seeds toasted and crushed
- ½ teaspoon coriander seeds toasted and crushed
- 1 teaspoon dried oregano
- ½ lemon zest and juice
- 3 tablespoons fresh flat-leaf parsley chopped, divided
- ¼ teaspoon fine salt plus more to taste
- ½ teaspoon coarse black pepper
Instructions
Bake and Scoop
- Heat the oven to 400 degrees F. Scrub and dry the sweet potatoes and prick each one four or five times with a fork.
- Bake them straight on the oven rack, with a sheet pan on the rack below to catch drips, for 50 to 60 minutes, until a knife slides into the center with no resistance. Cool 10 minutes.
- Toast the fennel and coriander seeds in a small dry skillet over medium heat for 60 to 90 seconds, until fragrant. Crush them roughly with the flat of a knife.
- Halve each potato lengthwise and scoop the flesh into a bowl, leaving a ¼ inch wall in each shell. Set the four shells cut side up on a parchment lined sheet pan.
Fill and Bake Again
- Add 2 tablespoons of the olive oil, the grated garlic, the crushed seeds, the oregano, salt and pepper to the warm flesh and mash with a fork until mostly smooth.
- Fold in half the feta, the chopped olives, the sundried tomatoes and 2 tablespoons of the parsley. Stir in the lemon zest and juice, then taste and adjust the salt.
- Divide the filling between the shells and mound it gently without packing it down. Scatter the remaining feta over the tops, tuck in the olive halves and drizzle with the last tablespoon of olive oil.
- Bake at 400 degrees F for 15 to 20 minutes, until the feta on top is golden and blistered at the edges. Scatter the remaining parsley over and serve hot.
Notes
- Bake them past done: A merely tender potato will not mash smoothly. Wait until a knife meets no resistance at all.
- Mash it warm: Cold sweet potato flesh will not absorb the olive oil.
- Salt last: Feta, olives and sundried tomatoes are all salty. Taste before you add any more.
- No dairy: Skip butter, milk and cream. Olive oil is the fat here and it keeps the dish savory.
- Make ahead: Assemble up to 2 days ahead, refrigerate, and run the second bake from cold with 10 extra minutes.
