Crispy Grated Potato Pie with Spinach and Mushrooms is a comforting and savory dish that combines crispy baked potato layers with a flavorful filling of sautéed spinach and mushrooms. This recipe is perfect for home cooks looking for an easy, crowd-pleasing meal that feels a bit special but comes together without fuss. It’s a great way to enjoy vegetables alongside cheese and eggs for a filling, balanced meal. Plus, the use of grated potatoes creates a wonderfully crisp texture that contrasts nicely with the creamy mozzarella and tender veggies. For those who appreciate straightforward recipes, this pie offers simplicity without sacrificing taste or presentation, and you can trust it’s made with wholesome ingredients and clear steps that anyone can follow. As a note, this pie does contain dairy and eggs, so it’s best suited for those who tolerate these ingredients well; otherwise, it might be considered an occasional indulgence.
Why This Recipe Is Helpful
- Uses grated potatoes to create a naturally gluten-free crust with a satisfying crunch.
- Combines simple fresh vegetables with cheese and eggs for a well-rounded, cozy dish.
- The layering technique ensures everything cooks evenly and looks attractive when served.
Best For
This recipe is ideal for families or anyone who enjoys a savory pie with vegetables hidden inside — great for making ahead and serving for lunch or dinner.
Be Careful If
This dish contains dairy and eggs, which may not suit vegans or those with dairy or egg allergies. It’s moderately rich, so it’s best enjoyed in balanced portions alongside a fresh salad or lighter sides.
Ingredients
- 600 g (1.3 lbs) potatoes, peeled and grated
- 150 g (5 oz) baby spinach, roughly chopped
- 200 g (7 oz) champignon mushrooms, finely chopped
- 1 green onion, finely chopped
- 1 garlic clove, minced
- 2 tablespoons olive oil
- Salt and pepper, to taste
- 1 teaspoon dried oregano
- 2 tablespoons fresh parsley, chopped
- 180 g (6.3 oz) grated mozzarella cheese
- 120 g (4.2 oz) Fior di Latte mozzarella, sliced
- Grated Parmesan cheese, for topping (about 1/4 cup / 25 g)
- 2 large eggs, beaten
Ingredient Notes
- Grated potatoes provide a gluten-free, crispy base that bakes well without added flour.
- Using a mix of mozzarella types adds depth in texture and flavor; Fior di Latte melts smooth, while grated mozzarella blends into the potato mixture.
- Fresh spinach and mushrooms bring color, moisture, and nutrients.
- Fresh parsley and oregano offer herby freshness that brightens the pie.
Kitchen Tools Needed
- Box grater or food processor for potatoes
- Large mixing bowl
- Frying pan
- Baking dish (around 9×9 inch or similar)
- Measuring cups and spoons
- Spatula or wooden spoon
Step-by-Step Instructions
- Peel the potatoes and grate them coarsely using a box grater. Place the grated potatoes into a large bowl of cold water and let rest for 15 minutes to remove excess starch and prevent browning.
- Preheat your oven to 200°C (390°F).
- While the potatoes soak, finely chop the green onion, baby spinach, and champignon mushrooms. Mince the garlic clove.
- Heat 2 tablespoons of olive oil in a frying pan over medium heat. Add the chopped green onion and baby spinach first, seasoning lightly with salt and pepper. Cook for 3-4 minutes until spinach wilts.
- Add in the champignon mushrooms, minced garlic, and a sprinkle of oregano. Continue cooking for another 5 minutes or until the mushrooms release their moisture and the mixture becomes fragrant and mostly dry. Remove from heat.
- Drain the potatoes well and squeeze out as much water as possible using a clean kitchen towel or your hands—this step is key for getting a crispy pie.
- In a large bowl, combine the drained grated potatoes with grated mozzarella, beaten eggs, chopped fresh parsley, and season generously with salt and pepper. Mix everything thoroughly to form a cohesive mixture.
- Grease your baking dish with a little olive oil. Spread half of the potato mixture evenly on the bottom to form a firm base layer.
- Layer the Fior di Latte mozzarella slices over the potato base, then evenly spread the cooled spinach and mushroom filling on top.
- Cover the filling with the remaining potato mixture, smoothing it out gently.
- Sprinkle grated Parmesan cheese liberally over the top layer.
- Bake in the preheated oven for 35-40 minutes, or until the pie is golden brown and crispy on top.
- Remove from the oven and sprinkle the remaining grated mozzarella cheese over the pie. Return to the oven for an additional 10-15 minutes, until the cheese melts and bubbles appealingly.
- Let the pie cool for 5 minutes before garnishing with extra parsley and Parmesan cheese. Serve warm and enjoy!
Pro Tips
- Make sure to squeeze out water from the grated potatoes thoroughly to prevent a soggy pie.
- Don’t skip the second cheese layer on top—it adds a beautiful golden crust and gooey finish.
- Use a baking dish with enough surface area to keep the layers shallow for even baking.
- If your spinach mixture looks watery, cook it slightly longer to evaporate excess moisture before assembling.
Lighter Swaps
- Use part-skim mozzarella cheeses to reduce fat while keeping good melt quality.
- Swap olive oil for a lighter vegetable oil if you prefer.
- Skip or reduce Parmesan topping for fewer calories; however, the original cheese blend works best for flavor and texture balance.
Common Mistakes
- Not squeezing the potatoes dry enough, which can cause the pie to be soggy inside.
- Overcrowding the pan when sautéing vegetables, leading to steaming rather than sautéing.
- Baking the pie at too low temperature, resulting in a pale, soft crust instead of a crispy golden one.
Serving Suggestions
Serve slices of this potato pie with a simple green salad or roasted vegetables for a complete meal.
Storage Instructions
Cool the pie completely, then cover tightly and store in the refrigerator for up to 3 days.
Reheating Tips
Reheat individual slices in a preheated oven or toaster oven at 180°C (350°F) for about 10-15 minutes to restore crispness. Microwave reheating is possible but may soften the crust.
Nutrition Estimate (per serving; serves 6)
- Calories: ~320 kcal
- Protein: 16 g
- Carbohydrates: 28 g
- Fat: 15 g
Values are estimates and may vary by ingredients and portion size.
Recipe Summary
- Prep Time: 25 minutes
- Cook Time: 50 minutes
- Total Time: 1 hour 15 minutes
- Servings: 6
- Cuisine: Mediterranean-inspired
- Course: Main / Vegetarian
- Calories: Approximately 320 kcal per serving
Frequently Asked Questions
Q: Can I use frozen spinach instead of fresh?
A: Yes, but make sure to thaw and squeeze out all excess water to avoid a watery filling.
Q: Is this pie gluten-free?
A: Yes, made with grated potatoes instead of flour for the crust, making it naturally gluten-free.
Q: Can I prepare this pie ahead of time?
A: Absolutely. Assemble the pie, cover, and refrigerate it for up to 24 hours before baking.
This Crispy Grated Potato Pie with Spinach and Mushrooms is a versatile, tasty option for those who want a savory, satisfying dish that highlights fresh vegetables with a crispy, cheesy finish. It’s well worth making when you want a homely yet elegant meal that can easily become a weeknight favorite. If you want to explore more practical cooking ideas with a clear explanation of recipe guidelines, this is an excellent recipe to try and adapt according to your kitchen basics and taste preferences.