Ingredients
Scale
- 2 sheets frozen puff pastry, thawed according to package directions
- 2 tablespoons unsalted butter
- 2 tablespoons all-purpose flour
- ¼ teaspoon kosher salt
- 1 cup whole milk, room temperature
- ¼ teaspoon pepper
- 2 cups cooked ham, diced
- 2 cups fresh spinach
- 1 ½ cups Swiss cheese, grated and divided
- 1 large egg white, lightly beaten
Instructions
- Preheat Oven: Preheat oven to 400°F (200°C). Line a large baking sheet with parchment paper. This preparation ensures your pastries will cook evenly and won’t stick to the baking sheet, making cleanup easier.
- Prepare Pastry: Cut the puff pastry sheets into 5-inch (13cm) squares and place in the refrigerator until ready to use. Keeping the pastry cold helps maintain its flaky texture when baked.
- Make Roux Base: Melt butter in a saucepan over medium heat. Add flour and kosher salt, cooking for 1 minute while stirring frequently. This creates a roux that will thicken your sauce and provide a smooth, velvety texture.
- Create Béchamel: Slowly add milk while whisking constantly until the mixture is smooth and begins to boil. Continuous whisking prevents lumps from forming and ensures a silky sauce consistency.
- Thicken Sauce: Reduce heat to low and let the mixture simmer, stirring occasionally, until it thickens. The sauce should coat the back of a spoon when properly thickened.
- Add Spinach: Add fresh spinach to the sauce and cook for 1 minute, or until wilted. The spinach will significantly reduce in volume as it cooks.
- Incorporate Ham and Cheese: Add diced ham and 1 cup of grated Swiss cheese into the sauce, stirring until well combined. Remove from heat and set aside. The residual heat will melt the cheese into the sauce.
- Assemble Pastries: Arrange puff pastry squares evenly on the prepared baking sheet. Top with a heaping spoonful of the ham and cheese mixture, then sprinkle with the remaining grated cheese. Distribute filling evenly for consistent baking.
- Form Pastry Shape: Fold the corners of each puff pastry square toward the center to form a smaller square. This creates an attractive presentation while keeping the filling contained.
- Apply Egg Wash: Brush the tops and sides of the pastries with lightly beaten egg white. This will give the pastries a beautiful golden-brown sheen when baked.
- Bake: Bake for 18-20 minutes, or until pastries are puffed and golden brown. The pastry should be crisp and flaky, with the filling hot throughout.
Notes
- For extra flavor, consider adding a teaspoon of Dijon mustard to the béchamel sauce.
- These pastries can be assembled ahead of time and refrigerated for up to 24 hours before baking.
- Try variations with different cheeses like Gruyère or Emmental for unique flavor profiles.
- Leftover pastries can be reheated in a 350°F oven for 5-7 minutes to restore crispness.
- For a vegetarian option, substitute the ham with sautéed mushrooms.
- Prep Time: 25 minutes
- Cook Time: 20 minutes
- Category: Appetizers
- Method: Baking
- Cuisine: French-inspired
Nutrition
- Serving Size: 1 pastry
- Calories: 320
- Sugar: 2g
- Sodium: 580mg
- Fat: 22g
- Saturated Fat: 8g
- Unsaturated Fat: 13g
- Trans Fat: 0g
- Carbohydrates: 20g
- Fiber: 1g
- Protein: 12g
- Cholesterol: 25mg