Leftover mashed sweet potato is the least inspiring thing in my fridge.
It sits there in a quart container after a Sunday roast, too plain to eat on its own and too good to throw out.
Last November I had about two cups of it and a waffle iron I had not touched since spring.
So I grated in some sharp cheddar, cracked in three eggs, and poured the whole thing into the iron without thinking too hard about it.
The first one came out limp.
My wife ate it anyway and told me it tasted great, which was true, and that it had the texture of a wet sponge, which was also true.
The fix turned out to be water, or rather getting rid of it.
Cold mash instead of warm, a squeeze of the shredded potato in a dish towel, and a lid I left shut longer than felt right.
Batch two came out with crisp lacy edges and a soft middle, and I have made them roughly every other weekend since.
These are savory, and I mean properly savory.
Sharp cheddar, scallion, garlic and a lot of black pepper.
There is no syrup anywhere near them.
I eat mine with a fried egg on top and the yolk broken over the grid, and it is one of my favorite breakfasts of the whole year.
Why These Are Savory, Not Sweet
The sweet potato here behaves like a potato, not like a dessert. That distinction matters more than anything else in this recipe.
Sweet potato has natural sugar, sure. But put enough sharp cheddar, garlic and cracked pepper against it and the sugar reads as depth instead of sweetness.
Think of it the way you think of a really good hash brown.
There's a sweet version of this waffle out there with cinnamon and syrup, and it's a lovely thing for a different morning.
This is not that recipe.
If you put maple syrup on these, the cheddar will fight it and you will be sad.
Fair warning: the pepper is not shy here. I use a full ¾ teaspoon of coarsely ground black pepper and I like it.
What You Need
Nine ingredients, and four of them are already in your cabinet. The two that actually decide how these turn out are the cheddar and the sweet potato itself.
- Cooked mashed sweet potato (2 cups, cooled). About two medium potatoes, roasted or boiled and mashed smooth. It must be cold. Warm mash makes a loose batter that steams instead of crisping.
- Shredded raw sweet potato (1 cup). One small potato on the large holes of a box grater, then squeezed dry in a towel. This is where the crisp edges come from.
- Large eggs (3). Structure and binding. Don't cut these down.
- All purpose flour (¾ cup). Enough to hold the waffle together without turning it bready. A cup for cup gluten free blend works fine.
- Baking powder (1 teaspoon). A little lift so the inside stays tender.
- Sharp cheddar (1 cup shredded, plus ¼ cup held back). SHARP, not mild. Mild cheddar disappears completely into the sweet potato and you will wonder why the recipe is called cheesy.
- Scallions (3, thinly sliced). The best value ingredient on this list. They cut the richness and they cost almost nothing.
- Garlic powder (1 teaspoon). Fresh garlic scorches on a hot iron. Powder does not.
- Kosher salt and black pepper (1 teaspoon and ¾ teaspoon). Coarse grind on the pepper so you get little hits of heat rather than a flat background hum.
- Melted butter (2 tablespoons). Richness in the batter, and it helps the outside brown.
Pro tip: shred the cheddar yourself off a block. The anti caking powder on pre shredded cheese keeps it from melting into that thin crisp layer we're after.
Cooked and Mashed, or Raw and Shredded
Every sweet potato waffle recipe online picks one of these, and neither one is wrong. They just make two different waffles.
Raw shredded potato gives you something close to a hash brown in a waffle grid.
Lacy, crisp, a little chewy, and almost no soft interior.
Cooked mashed potato gives you a tender, smooth, pancake-like waffle with real sweet potato flavor and very little crunch.
I wanted both, so I use mash as the base and fold in a smaller amount of raw shreds.
The mash carries the flavor and keeps the middle soft. The shreds sit at the edges of the grid and crisp up against the hot plate.
Want to go one way or the other? Swap the shredded cup for another half cup of mash for a softer waffle, or flip the ratio for a crunchier one.
The Moisture Rule
A soggy sweet potato waffle is a water problem, every single time. Sweet potato is roughly three quarters water by weight, and all of that water has to leave before the outside can crisp.
- Cool the mash completely. Warm mash releases steam into the batter and thins it. Straight from the fridge is ideal.
- Squeeze the shreds. Wrap them in a clean dish towel and wring hard over the sink. You'll be surprised how much orange water comes out.
- Don't thin the batter. It should be thick and scoopable, closer to a drop biscuit dough than a pancake batter. If it pours easily, it's too wet.
- Don't overfill the iron. Batter squeezing out the sides traps steam at the edges and those edges never crisp.
Too thick after all that? Add a tablespoon of milk at a time, and stop early.
How to Make Them
Twenty minutes of work, most of it grating. The batter comes together in one bowl.
Step 1: Prep the Potato
Roast or boil two medium sweet potatoes until soft, then mash and chill until cold. I do this the night before.
Grate the raw potato on the large holes, wrap it in a towel and squeeze out as much liquid as you can.
Step 2: Mix
Whisk the flour, baking powder, garlic powder, salt and pepper in a large bowl.
In another bowl, beat the eggs, then stir in the cold mash and the melted butter until smooth.
Fold the wet into the dry, then add the cheddar, the squeezed shreds and the scallions.
Stop mixing the moment it comes together. Overmixing makes them tough.
Step 3: Rest
Let the batter sit for 10 minutes while the iron heats.
The flour hydrates, the batter tightens, and the waffles hold together better.
Step 4: Cook
Scoop about ½ cup of batter per waffle onto the hot greased plate and spread it just short of the edges.
Close the lid and leave it alone for 5 to 7 minutes.
Getting the Iron Right
Cheesy batter sticks harder than plain batter, so the iron needs more help than usual.
- Preheat fully. A lukewarm iron is the second biggest cause of sogginess after wet batter. Wait for the light.
- Grease properly. Brush on neutral oil or melted butter with a pastry brush. A thin spray mist is not enough for this batter.
- Regrease every waffle. Yes, every one. It takes five seconds.
- Drop the held back cheese on the plate first. A scant tablespoon of cheddar straight onto the hot iron, then the batter on top of it. It fries into a thin crisp cheese layer on the outside of the waffle and it's my favorite part.
Knowing When It Is Done
Steam is your timer, not the clock.
For the first few minutes the iron will push out a heavy cloud of steam from the seam.
That means there's still water leaving the batter, and the waffle is not set.
When the steam thins to almost nothing, you're there.
Opening early? The waffle tears in half and leaves the top on the lid. I've done it plenty.
The finished edges look dark gold and lacy where the cheese hit the plate.
How to Serve Them
A fried egg on top is the default in my house and I rarely deviate. The runny yolk does the job a sauce would do.
- Fried egg and scallion. Soft yolk, sliced scallion greens, another crack of pepper. Breakfast, done.
- Sour cream or creme fraiche. A cool spoonful against all that pepper. Excellent.
- Fried chicken. Swap these in wherever you'd use a plain waffle. The cheddar and the crunch are a natural fit.
- Pulled pork. Pile on a little and eat it with a knife and fork. Sunday food.
- Alongside chili or a bowl of soup. They work like a savory quick bread, and they're a great way to use one up.
Who doesn't love a breakfast you can eat with your hands? These hold up cold in a lunchbox too.
Variations
- The three ingredient version. Cooked mashed sweet potato, eggs and cheddar. No flour, no leavening. It's softer and more custardy, but it works and it's genuinely quick.
- Herbs. A teaspoon of chopped rosemary or thyme in the batter. Rosemary and sweet potato is a fantastic pairing.
- Spicy. Chopped pickled jalapeno, or a pinch of cayenne with the dry ingredients.
- Different cheese. Gruyere makes them nuttier and browner. Pepper jack brings heat and melt in one move.
- Gluten free. A cup for cup blend swaps in one to one with no other changes.
- Smaller waffles. A mini iron turns this into party food. Top each one with a spoonful of sour cream.
Storage, Reheating and Freezing
- Fridge. Cooled completely, in a sealed container, up to 4 days.
- Freezer. Freeze them flat on a sheet pan first, then bag them. They keep 3 months and they don't stick together.
- Reheating. A toaster on medium is the best method by a mile, and a 375°F oven for 8 minutes is the runner up.
- Never the microwave. It re steams everything you worked to drive out and you get that limp first attempt all over again.
Make them once and you'll understand why I keep a bag of these in the freezer through the winter.
Recipe
Cheesy Savory Sweet Potato Waffles
Ingredients
For the Waffles
- 2 cups cooked mashed sweet potato about 2 medium, cooled completely
- 1 cup raw sweet potato coarsely shredded and squeezed dry
- 3 large eggs
- ¾ cup all purpose flour
- 1 teaspoon baking powder
- 1 teaspoon garlic powder
- 1 teaspoon kosher salt
- ¾ teaspoon black pepper coarsely ground
- 1 ¼ cups sharp cheddar shredded, ¼ cup held back for the iron
- 3 scallions thinly sliced
- 2 tablespoons unsalted butter melted
- neutral oil or melted butter for greasing the iron
To Serve
- 4 large eggs fried
- 2 scallion greens thinly sliced
- sour cream optional
Instructions
Prep the Sweet Potato
- Roast or boil 2 medium sweet potatoes until fully soft, then peel, mash smooth and chill until cold. This can be done a day ahead.
- Grate 1 small raw sweet potato on the large holes of a box grater. Wrap the shreds in a clean dish towel and wring out as much liquid as you can.
Make the Batter
- Whisk the flour, baking powder, garlic powder, salt and black pepper together in a large bowl.
- In a second bowl, beat the eggs, then stir in the cold mashed sweet potato and the melted butter until smooth.
- Fold the wet mixture into the dry, then add 1 cup of the shredded cheddar, the squeezed shreds and the sliced scallions. Stop mixing as soon as it comes together. The batter should be thick and scoopable, not pourable.
- Let the batter rest for 10 minutes while the waffle iron preheats fully.
Cook the Waffles
- Brush the hot iron generously with neutral oil or melted butter. A spray mist is not enough for this batter.
- Scatter a scant tablespoon of the held back cheddar directly onto the hot plate, then scoop about ½ cup of batter on top of it and spread it just short of the edges.
- Close the lid and cook for 5 to 7 minutes without opening it. Heavy steam from the seam means the waffle is not set yet. When the steam thins to almost nothing, the waffle is done and the edges are dark gold and lacy.
- Lift the waffle out and repeat, regreasing the iron before every waffle. Hold finished waffles in a 200F oven directly on the rack so the bottoms stay crisp.
Serve
- Top each waffle with a fried egg, sliced scallion greens and another crack of black pepper. Add a spoonful of sour cream if you like.
Notes
- Cold mash is not optional: warm mashed sweet potato thins the batter and the waffles steam instead of crisping.
- Use sharp cheddar: mild cheddar disappears into the sweet potato and the waffles taste plain.
- Shred your own cheese: the anti caking powder on pre shredded cheese stops it forming that thin crisp layer on the outside.
- Freezing: freeze flat on a sheet pan, then bag for up to 3 months. Reheat in a toaster or a 375F oven, never the microwave.
- Gluten free: a cup for cup blend swaps in one to one.
