Chicken and Potato Casserole with Garlic Parmesan - Petite Panini

Ingredients

• 500 g boneless, skinless chicken breast
• 4 medium potatoes
• 1 medium onion
• 3 cloves garlic
• 2 tbsp olive oil
• 1 tsp salt
• 1/2 tsp black pepper
• 1/2 tsp smoked paprika
• 1/2 tsp dried oregano
• 2 tbsp butter
• 2 tbsp all-purpose flour
• 1 cup milk
• 1/2 cup chicken broth
• 1/2 cup heavy cream
• 1 tsp garlic powder
• 1/2 cup grated Parmesan cheese
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1 cup shredded mozzarella cheese
• 2 tbsp chopped fresh parsley