Chicken and corn pasta bake

Ingredients

• Sauce
• 40 gram butter
• 2 finely chopped garlic cloves
• 1 tablespoon rosemary, chopped
• 2 tablespoon plain flour
• 2 cup milk
• 1 cup shredded tasty cheese
• 500 gram large shell pasta
• 1 shredded, bones discarded barbecued chicken
• 400 gram can, drained corn kernels
• 1 cup frozen peas
• 1 egg, lightly beaten
• 1 cup grated parmesan
• 1 cup panko (or dried) breadcrumbs