Preheat your oven to 350°F (175°C) and grease a large baking dish with butter. Cut the croissants into thirds, then arrange them in a single layer in the prepared dish.

In a medium mixing bowl, whisk together 3-4 large eggs, heavy cream or milk, salt, garlic salt, pepper, and freshly chopped rosemary until well combined.

Dip each croissant piece into the egg mixture, ensuring they are just coated without soaking too long. Layer them back into the baking dish.

Sprinkle your choice of deli meat evenly throughout the croissant layers, followed by a generous sprinkling of Swiss cheese.

Mix softened butter, honey, and any extra herbs until smooth and creamy. This blend will be drizzled over before baking.

Pour any remaining egg mixture over the croissant layers and drizzle with honey butter. Bake in the preheated oven for approximately 15 minutes.