Making Breakfast Croissant Sandwiches is a breeze when you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).

2. Prepare the Croissants: Slice the croissants in half horizontally, creating a top and bottom.

3. Grease the Pan: Lightly butter a baking dish or sheet to prevent sticking.

4. Cook the Eggs: In a bowl, whisk the eggs with salt and pepper. Pour into a heated skillet over medium heat. Scramble until just set, then remove from heat.

5. Assemble the Sandwiches: On the bottom half of each croissant, layer the scrambled eggs, cheese, and any additional fillings like bacon or spinach.

6. Top with Croissant Halves: Place the top half of the croissant back on each sandwich.

7. Bake: Place the assembled sandwiches in the preheated oven for about 10-15 minutes, or until the cheese is melted and the croissants are golden.

8. Serve: Remove from the oven and serve warm. Optionally, add toppings like avocado or hot sauce for extra flavor.