If you’re looking for a delicious way to use up leftover mashed potatoes, or simply want a crispy, cheesy, veggie-packed dish that the whole family will love, these Cheesy Spinach & Potato Cakes are about to become your new favorite recipe. Golden and crunchy on the outside, tender and savory on the inside, they’re packed with sharp cheese, nutritious spinach, and flavorful seasonings. Perfect as a side dish, a vegetarian main course, or even a savory breakfast, these potato cakes come together in under an hour with simple, budget-friendly ingredients. Whether you serve them with a dollop of sour cream, a creamy yogurt dip, or a drizzle of garlic aioli, they’re guaranteed to disappear fast.
Why You’ll Love This Recipe
· Uses Leftover Mashed Potatoes: The perfect way to repurpose leftover mashed potatoes into something new and exciting.
· Incredibly Crispy and Cheesy: The combination of cheese, a golden pan-fry, and a flour coating creates a crispy exterior with a warm, melty interior.
· Sneaks in Veggies: Fresh spinach adds nutrition and a beautiful green fleck without overpowering the flavor. Even picky eaters will love these.
· Budget Friendly: Uses simple, affordable ingredients you likely already have on hand.
· Versatile: Serve as a side dish, appetizer, vegetarian main, or breakfast item.
· Make-Ahead Friendly: Form the patties ahead of time and refrigerate or freeze for later.
· Family Approved: Kids and adults alike love the cheesy, crispy texture.
· Customizable: Add bacon, herbs, or different cheeses to suit your taste.
Ingredients You’ll Need
· 3 cups mashed potatoes (cold works best)
· 1 ½ cups fresh spinach, finely chopped (or thawed frozen spinach, squeezed dry)
· 1 large egg
· 1 cup shredded Parmesan or mozzarella cheese
· ½ cup all-purpose flour (plus extra for dusting)
· 1 teaspoon garlic powder
· ½ teaspoon onion powder
· 1 teaspoon salt
· ½ teaspoon black pepper
· 2 tablespoons olive oil or butter (for frying)
Optional add-ins: ¼ cup cooked crumbled bacon, ¼ cup diced ham, 2 tablespoons fresh chives or parsley, ½ teaspoon smoked paprika, ¼ teaspoon red pepper flakes for heat, ½ cup shredded sharp cheddar for extra cheesiness.
Note: For a gluten-free version, use gluten-free all-purpose flour or almond flour. For a dairy-free option, use dairy-free cheese and plant-based butter. Cold mashed potatoes are essential—warm potatoes are too soft and won’t hold their shape.
Step-by-Step Instructions
- Combine the Ingredients: In a large mixing bowl, combine the mashed potatoes, chopped spinach, egg, shredded cheese, flour, garlic powder, onion powder, salt, and black pepper.
- Mix Thoroughly: Mash and mix with a potato masher or sturdy spoon until all the ingredients are evenly distributed and a thick, moldable dough forms. If the mixture is too sticky, add a little more flour, one tablespoon at a time.
- Form the Patties: Divide the mixture into 8 equal portions. Roll each into a ball, then flatten into round patties, about ½-inch thick. Lightly dust both sides with flour to help them hold their shape and crisp up.
- Chill (Optional but Recommended): Place the shaped patties on a baking sheet and refrigerate for 15–20 minutes to firm them up. This prevents them from falling apart during frying and helps them develop a better crust.
- Heat the Skillet: Heat the olive oil or butter in a large skillet over medium heat until shimmering.
- Fry the Potato Cakes: Carefully place the patties in the skillet in a single layer. Do not overcrowd the pan—work in batches if necessary. Fry for 3–4 minutes per side, until they are deeply golden brown and crispy on the outside.
- Drain: Transfer the cooked cakes to a plate lined with paper towels to drain any excess oil.
- Serve Hot: Serve hot as a side dish or a delicious vegetarian main course. Garnish with extra fresh herbs if desired.
Tips for the Best Cheesy Spinach & Potato Cakes
· Use Cold Mashed Potatoes: Cold mashed potatoes hold their shape better than warm ones. If using fresh mashed potatoes, chill them in the refrigerator for at least 2 hours before making the cakes.
· Squeeze Spinach Dry: If using frozen spinach, make sure to squeeze out as much moisture as possible. Excess water will make the cakes soggy and cause them to fall apart.
· Don’t Overmix: Mix the ingredients just until combined. Overmixing can make the potato cakes dense and gluey.
· Chill Before Frying: The 15–20 minute chill is optional but highly recommended. It firms up the patties and helps them stay intact when flipped.
· Use a Combination of Butter and Oil: Butter adds flavor while oil prevents burning. The combination creates the perfect frying medium and a beautiful golden crust.
· Don’t Overcrowd the Pan: Fry in batches to ensure even cooking and maximum crispiness.
· Serve Immediately: These potato cakes are best enjoyed hot and fresh from the skillet while the cheese is melty and the exterior is crispy.
Variations & Substitutions
· Bacon Spinach Potato Cakes: Add ¼ cup cooked crumbled bacon to the mixture for a smoky, savory twist.
· Cheesy Spinach & Feta Cakes: Use crumbled feta cheese instead of Parmesan for a tangy, Mediterranean flavor.
· Herb Potato Cakes: Add 2 tablespoons fresh chopped dill, parsley, or basil to the mixture.
· Spicy Spinach Potato Cakes: Add ¼ teaspoon cayenne pepper or diced jalapeños for heat.
· Sweet Potato Spinach Cakes: Substitute half the mashed potatoes with mashed sweet potatoes for a sweeter, colorful variation.
· Vegan Version: Use a flax egg (1 tablespoon ground flaxseed + 3 tablespoons water) and dairy-free cheese.
Make-Ahead and Freezer Instructions
· Make-Ahead: Form the potato cakes and refrigerate for up to 24 hours before frying. This makes dinner prep quick and easy.
· Freezer Method: Arrange uncooked potato cakes in a single layer on a baking sheet and freeze until solid. Transfer to a freezer bag and freeze for up to 3 months. Cook from frozen, adding 2–3 minutes per side. You can also freeze cooked potato cakes—reheat in a 375°F oven or air fryer until crispy.
Frequently Asked Questions
Can I use fresh mashed potatoes instead of leftover?
Yes, but make sure they’re cold. Spread freshly made mashed potatoes on a baking sheet and refrigerate for at least 2 hours until firm. Cold potatoes hold their shape better and result in crispier cakes.
Why are my potato cakes falling apart?
This usually means the mixture is too wet or there isn’t enough binder. Add more flour or another egg to help bind the mixture. Also, make sure to squeeze excess moisture out of the spinach and press the patties firmly together when forming.
Can I bake these instead of frying?
Yes! Place the potato cakes on a greased baking sheet, brush with melted butter or olive oil, and bake at 400°F for 20–25 minutes, flipping halfway, until golden and crispy. They won’t be quite as crispy as fried, but still delicious.
Can I air fry these potato cakes?
Absolutely. Preheat the air fryer to 375°F. Spray the potato cakes with oil and air fry for 10–12 minutes, flipping halfway, until golden and crispy.
How do I store leftovers?
Store in an airtight container in the refrigerator for up to 4 days. Reheat in a skillet over medium heat, in the oven at 375°F, or in the air fryer to restore crispiness. Avoid microwaving, which makes them soggy.
Can I freeze these potato cakes?
Yes! Freeze uncooked or cooked potato cakes. For uncooked, freeze on a baking sheet until solid, then transfer to a freezer bag. Cook from frozen, adding a few minutes per side. For cooked, reheat in the oven or air fryer.
What can I serve with these potato cakes?
Serve with sour cream, applesauce, ranch dressing, or a dollop of Greek yogurt. They pair beautifully with eggs and bacon for breakfast, or as a side dish with roasted chicken, steak, or pork. They’re also delicious with a simple green salad.
Are these potato cakes gluten-free?
They can be. Use gluten-free all-purpose flour or almond flour instead of regular flour. Ensure all other ingredients are gluten-free.
Recipe Card: Cheesy Spinach & Potato Cakes
· Prep Time: 15 minutes (+ 20 minutes chilling time)
· Cook Time: 15 minutes
· Total Time: 50 minutes
· Servings: 4
· Category: Side Dish, Appetizer, Vegetarian Main
· Cuisine: American
Ingredients:
· 3 cups mashed potatoes (cold)
· 1 ½ cups fresh spinach, finely chopped
· 1 large egg
· 1 cup shredded Parmesan or mozzarella cheese
· ½ cup all-purpose flour (plus extra for dusting)
· 1 teaspoon garlic powder
· ½ teaspoon onion powder
· 1 teaspoon salt
· ½ teaspoon black pepper
· 2 tablespoons olive oil or butter (for frying)
Instructions:
- Combine mashed potatoes, spinach, egg, cheese, flour, and seasonings in a large bowl. Mix until a thick dough forms.
- Divide into 8 portions. Roll into balls and flatten into ½-inch thick patties. Dust with flour.
- Optional: Refrigerate patties for 15–20 minutes to firm up.
- Heat olive oil or butter in a large skillet over medium heat.
- Fry patties in a single layer, 3–4 minutes per side, until golden brown and crispy.
- Drain on paper towels. Serve hot.
Nutrition (per serving, approximate):
· Calories: 380
· Protein: 14g
· Carbohydrates: 38g
· Fat: 19g
· Fiber: 3g
· Sugar: 3g
Nutrition will vary based on specific ingredients and portion size.
Final Thoughts
These Cheesy Spinach & Potato Cakes are the ultimate way to transform leftover mashed potatoes into something truly special. They’re golden, crispy, cheesy, and packed with savory flavor and hidden veggies—everything you want in a comfort food dish. Whether you serve them as a side dish, appetizer, or vegetarian main, they’re guaranteed to be a hit. The best part? They come together in under an hour with simple ingredients you probably already have on hand. Make a batch today and watch them disappear.
Have you made these cheesy spinach and potato cakes? Share your favorite add-ins and serving ideas in the comments below!