Crispy Baked Ham and Swiss Croissants Step-by-step instructions

Before you start

Before beginning, ensure the oven is fully preheated to the specified temperature. Gather all ingredients and equipment, such as the baking sheet and pastry brush, to ensure a smooth assembly process.

If the ham slices are very large, trim them to fit the size of the croissant so they stay contained within the pastry. Having the melted butter and herbs ready in a small bowl will also streamline the brushing step, allowing for a consistent application across all three pastries.

Instructions

Preparation phase

1. 1Prepare the croissants
   Preheat the oven to 375°F (190°C). Use a serrated knife to carefully slice each croissant in half horizontally, ensuring the delicate pastry does not crumble. Place the bottom halves on a baking sheet lined with parchment paper for easy cleanup.
   Look for The croissants are split cleanly into two even halves.
   Tip Using a serrated knife prevents the pastry from squashing.

At the end of this phase, the croissants should be neatly sliced and arranged on the baking sheet. The surface of the pastries should be clean and ready for filling. Check that the baking sheet is properly lined with parchment paper to prevent the melted cheese from sticking to the surface, which simplifies the cleanup process later.

Assembly phase

2. 2Assemble the filling
   Layer two slices of ham and one slice of Swiss cheese onto the bottom half of each croissant. Place the top halves of the croissants over the cheese. In a small bowl, whisk together the melted butter and dried herbs, then brush this mixture generously over the tops of the pastries to ensure a golden, flavorful crust.
   Look for The butter mixture is evenly spread over the pastry crusts.
   Tip Do not overfill the croissants, as the cheese may leak during baking.

Once assembled, the croissants should look uniform with the ham and cheese tucked securely inside. The butter and herb mixture should be brushed evenly over the tops, giving them a slight sheen.

Ensure no butter is pooling on the baking sheet, as this could lead to the bottom of the croissants becoming excessively oily during the baking process.

Baking phase

3. 3Bake and serve
   Bake in the preheated oven for 10 to 12 minutes, or until the croissants are toasted and the cheese is bubbling and fully melted. Remove from the oven and let them rest for 5 minutes before serving to allow the cheese to set slightly, ensuring the best texture when slicing.
   Look for The cheese is bubbling and the pastry is golden brown.
   Tip Watch the croissants closely in the final minutes to avoid burning the tips.

When finished, the pastries should look golden and smell savory, with the aroma of toasted butter and melted cheese filling the kitchen. The cheese should be visibly bubbling between the layers. If the croissants are resting on the board, they should feel firm and crisp, indicating they are ready to be sliced and enjoyed immediately.

Common mistakes

A common mistake is using a dull knife, which can crush the airy layers of the croissant. Always use a sharp serrated knife with a gentle sawing motion. Another error is neglecting to preheat the oven; a cold oven will cause the pastry to become greasy rather than crisp.

Finally, ensure the butter is fully melted before mixing with the herbs, as clumps of solid butter will not spread evenly and can cause uneven browning across the surface of the pastry.

How to tell it’s done

The croissants are done when the pastry is deep golden brown and feels crisp to the touch. The most important indicator of doneness is the state of the Swiss cheese; it should be bubbling and fully melted between the layers.

If the cheese is not yet bubbling, continue baking for another minute or two, keeping a close eye on the edges to ensure they do not become too dark or charred.