Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper or lightly grease it.
Prepare the Spinach Filling:
Heat olive oil in a skillet over medium heat. Add the diced onion and garlic, and sauté until softened and fragrant, about 3-4 minutes.
Add the spinach to the skillet and cook until wilted (if using fresh) or warmed through (if using frozen), about 2-3 minutes. Season with salt, pepper, and nutmeg, if using. Remove from heat and let it cool slightly.
In a bowl, combine the cooked spinach mixture with ricotta, feta, and mozzarella cheeses. Mix well until fully combined.
Prepare the Puff Pastry:
Roll out the puff pastry sheet on a lightly floured surface. Cut it into 8 equal squares or rectangles.
Assemble the Pastries:
Place a spoonful of the spinach and cheese mixture in the center of each puff pastry square.
Fold each square in half to form a triangle (or a rectangle, depending on how you cut them). Press the edges together to seal, and use a fork to crimp the edges.
Place the stuffed pastries on the prepared baking sheet.
Egg Wash and Bake:
Brush the top of each pastry with the beaten egg. If desired, sprinkle sesame seeds on top for extra flavor and texture.
Bake in the preheated oven for 18-20 minutes, or until the pastries are golden brown and puffed up.
Serve:
Remove the pastries from the oven and allow them to cool slightly before serving. Enjoy warm!
Tips:
Make-Ahead: You can prepare the spinach filling ahead of time and store it in the fridge for up to 24 hours.
Variations: Add other ingredients to the filling, such as cooked mushrooms, sun-dried tomatoes, or artichokes for extra flavor.
Puff Pastry: If you want smaller bite-sized appetizers, cut the puff pastry into smaller squares for mini spinach stuffed pastries.
Nutritional Information (per pastry):
Calories: 220 kcal
Total Fat: 15g
Saturated Fat: 6g
Cholesterol: 45mg
Sodium: 310mg
Total Carbohydrates: 15g
Dietary Fiber: 1g
Sugars: 1g
Protein: 6g
These Easy Addictive Spinach Stuffed Pastries are flaky, cheesy, and packed with flavor! They make for a delightful snack, perfect for parties, or a satisfying meal on their own.