Ham and Cheese Croissant Bake

Name: Ham and Cheese Croissant Bake
Ingredients: 6-8 croissants; 1-2 tbsp Dijon mustard; 200 g sliced ham; 200 g Gruyère cheese (grated); 100 g brie (cut into chunks (optional)); Butter (for greasing); 4 large eggs; 225 ml double cream; Salt and freshly ground black pepper; About 1 tsp Dijon mustard; 50 g mozzarella (drained weight, grated or torn into very small pieces (optional)); Finely chopped chives; 80 g salted butter; 2 garlic cloves (minced); 3 sprigs of thyme (leaves stripped); 2 tbsp honey