Step 1

Boil a large pot of salted water on the stovetop. Add in potatoes and cover, cooking for 15 minutes or until potatoes are tender. Drain. Add in 1/2 cup milk, salt and pepper and 1 tbsp butter. Mash until smooth. Set aside.

Step 2

In a large pan, melt 1 tbsp butter over medium heat. Add onions and garlic and cook for about 5 minutes. Stir in flour.

Step 3

Whisk in milk, Dijon mustard, lemon juice, rosemary and curry powder. Continue to whisk constantly until it reaches a thick consistency. Add in chicken and frozen vegetables and stir for another 3 to 5 minutes.

Step 4

Spread chicken mixture in a 1.5 quart casserole dish. Spread mashed potatoes on top. Sprinkle on Parmesan cheese. Broil for about 5 minutes or until cheese melts. Serve hot.