
This method transforms leftover mashed potatoes into golden crispy potato cakes with tender centers. The secret lies in proper chilling and a hot pan.
Each bite delivers a perfectly browned exterior giving way to fluffy mashed potato inside. Serve with sour cream or applesauce for the ideal contrast.
Ingredients for Recipe for Potato Cakes with Mashed Potatoes
Transform leftover mashed potatoes into golden, crispy cakes with these simple ingredients.
| Ingredient | Amount | Notes |
|---|---|---|
| Leftover Mashed Potatoes 🥔 | 4 cups | Cold, fully chilled overnight |
| All-Purpose Flour 🌾 | ½ cup | For binding and crispiness |
| Large Egg 🥚 | 1 whole | Beaten, binds the cakes |
| Green Onions 🧅 | 4 pieces | Thinly sliced for freshness |
| Cheddar Cheese 🧀 | ½ cup | Shredded, sharp preferred |
| Butter 🧈 | 3 tbsp | Unsalted, for frying |
| Olive Oil 🫒 | 2 tbsp | For frying as needed |
| Salt 🧂 | ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ½ tsp | Freshly ground preferred |
| Garlic Powder 🧄 | ½ tsp | Adds savory depth |
| Paprika 🌶️ | ¼ tsp | Sweet or smoked variety |
| Sour Cream 🥛 | ½ cup | For serving, optional |
The mashed potatoes must be fully chilled—overnight in the fridge is ideal. Use the coldest, thickest leftovers you have (runny potatoes won’t hold). Whole Foods or Trader Joe’s have great pre-made mashed potatoes if you’re starting from scratch. The cheese matters here: sharp cheddar gives the best melt and flavor. Always shred it yourself from a block for even melting.
No egg? Flax egg (1 tbsp ground flax + 3 tbsp water) works in a pinch. Out of green onions? Chives or red onion can substitute. No cheddar? Pepper Jack adds a nice kick. The flour can be swapped for cornstarch for a gluten-free option. For extra crisp, add panko breadcrumbs to the mix—just a handful does the trick.
Potato cakes keep in the fridge for 3-4 days—reheat in a skillet to keep them crisp. They also freeze well for up to 3 months. Layer with parchment between each cake to prevent sticking. Serve immediately for the best texture (that golden crust is worth the wait).
Why You’ll Love This Recipe
- Leftover Rescue: I use up yesterday’s mashed potatoes instead of tossing them—no extra cooking, just mix and fry.
- Cheddar Crisp: That melty cheese inside with the golden crust? Honestly, it’s the reason I make extra mash on purpose.
- Breakfast or Dinner: I’ve served these for Sunday brunch and weeknight sides—same great taste, zero stress.
- One Bowl Wonder: Flour, egg, green onions, and cheese all come together in a single bowl. I’ll be real: cleanup’s a breeze.
Step-by-Step Instructions for Potato Cakes With Mashed Potatoes
Here’s the method to achieve golden, crispy potato cakes with a fluffy interior every time.
Step 1: Mix the Potato Cake Base
In a large bowl, combine the 4 cups Leftover Mashed Potatoes with the 0.5 cup All-Purpose Flour, 1 whole Large Egg, 0.5 tsp Salt, 0.5 tsp Black Pepper, 0.5 tsp Garlic Powder, and 0.25 tsp Paprika. I use a fork for this—it breaks up the potatoes evenly without overworking the mixture.
The mashed potatoes should be cold and fully chilled for best results, as this makes them easier to handle and helps the cakes hold their shape when cooking. The mixture should be thick and slightly sticky but manageable with your hands.
Step 2: Fold in Cheese and Green Onions
Add the 0.5 cup Cheddar Cheese and 4 pieces Green Onions (thinly sliced) to the potato mixture. Gently fold everything together until the cheese and green onions are evenly distributed. You’ll see streaks of cheese throughout, which will melt beautifully during cooking.
Avoid overmixing at this stage. The cheese should remain in small clumps rather than dissolving completely into the potato base. This ensures pockets of gooey, melted cheddar in your finished potato cakes.
Step 3: Form and Chill the Potato Cakes
Divide the mixture into 8 equal portions and shape each into a patty about ½-inch thick. I like to use slightly damp hands to prevent sticking. Press the edges firmly to ensure they hold together during frying.
Place the formed potato cakes on a plate or tray and refrigerate for 15-20 minutes. This chilling step is crucial—it firms up the cakes so they don’t fall apart when they hit the hot pan and helps create that coveted crispy exterior.
Step 4: Fry to Golden Perfection
Heat 2 tbsp Olive Oil and 1 tbsp Butter in a large skillet over medium heat. Once the butter is melted and foaming subsides, carefully place half of the potato cakes in the pan. Cook for 4-5 minutes per side until they’re deep golden brown and crispy.
Don’t crowd the pan—this lowers the temperature and leads to steaming instead of frying. Add the remaining 2 tbsp Butter as needed for subsequent batches. You’ll know they’re ready to flip when the edges look set and the bottom is a rich, golden color.
Step 5: Serve Warm with Sour Cream
Transfer the cooked potato cakes to a paper towel-lined plate to drain any excess oil. Serve immediately while still warm and crispy. I like to top each with a dollop of sour cream for a cool, creamy contrast to the hot, crispy cakes.
The interior should be fluffy and tender, while the outside offers a satisfying crunch. If making ahead, reheat in a 350°F oven for 10 minutes to restore crispiness before serving.
Pro Tips For Making Recipe For Potato Cakes With Mashed Potatoes
- Chill the Mixture: After mixing your mashed potatoes with egg, flour, and cheese, refrigerate for 20-30 minutes. I learned this the hard way—it keeps the cakes from falling apart in the pan.
- Use Cold Mashed Potatoes: If your leftovers are warm, spread them on a plate and chill first. Hot potatoes make the mixture too sticky and hard to shape.
- Skip Overmixing: Stir just until the flour disappears—any more and your potato cakes turn dense. My first batch was like hockey pucks.
- Press Cheese In: Fold in shredded cheddar instead of sprinkling it on top. Sounds weird, but it works: you get melty pockets in every bite.
Best Sauces and Condiments for This recipe for potato cakes with mashed potatoes
Classic Sour Cream
The traditional choice is sour cream—its cool, tangy creaminess balances the warmth of the cakes. I prefer full-fat Daisy brand for its rich texture. Add a sprinkle of chopped chives or a dash of hot sauce for extra flair. 💛
Sweet Applesauce
For a sweet-savory contrast, serve with unsweetened applesauce. The natural acidity cuts through the richness beautifully. I use Musselman’s for consistent quality. A pinch of cinnamon stirred in takes it to another level.
Spicy Sriracha Mayo
Mix ½ cup mayo with 1-2 tbsp Sriracha for a creamy, spicy kick. The heat complements the crispy potato texture. I like Hellmann’s mayo and Huy Fong Sriracha for this combo.
Herbed Greek Yogurt
Swap sour cream for Greek yogurt and add 1 tsp dried dill or fresh parsley. The tang is similar but with a lighter, protein-packed twist. I use Fage 2% for the perfect consistency.
This version works especially well with garlic-heavy potato cakes.
Smoky Chipotle Sauce
Blend ½ cup mayo, 1 tbsp adobo sauce from canned chipotles, and 1 tsp lime juice. The smoky depth pairs wonderfully with the cheddar in the cakes. 🔥
Nutrition Facts
Frequently Asked Questions
Why do my potato cakes fall apart when frying?
The mixture needs time to set. Chill formed patties for 15-20 minutes before cooking, and ensure mashed potatoes are cold and thick. Overmixing or using warm potatoes causes crumbling.
Can I use fresh potatoes instead of leftovers?
Yes, but cook and mash them first, then chill completely. Freshly mashed potatoes are too moist and won’t hold shape. Add 1 extra tbsp flour to absorb excess liquid.
How do I make them extra crispy?
Press patties thin (½-inch thick) and use a mix of butter and oil in the pan. Cook on medium heat until deep golden brown, about 4-5 minutes per side.
What can I substitute for the egg?
A flax egg (1 tbsp ground flax + 3 tbsp water) works perfectly. Let it sit for 5 minutes to thicken before mixing into the potato base.
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