herbs de provence - potato and ham casserole

Ingredients

• 2 cups white potatoes, peeled, thinly sliced
• 1 small sweet onion, coarsely chopped
• 1/3 cup canned small mushrooms, sliced
• 1/3 cup frozen baby peas
• 2 cooked ham, coarsely sliced
• 1 1/2 tablespoons butter
• 1 1/2 tablespoons flour
• 1/2 cup 2% milk
• 1/4 cup heavy cream
• 1 teaspoon course Dijon mustard
• 1/2 - 1 teaspoons sea salt
• 1/2 teaspoon freshly ground pepper
• 1 teaspoon Herbs de Provence, good quality
• 1 cup shredded extra aged cheddar or stilton
• shredded cheese and chopped parsley, to garnish