Creamy Au Gratin Potatoes

Cook the potatoes until tender

Melt the butter in a saucepan

Sauté the onion and garlic until translucent

Add the all-purpose flour and cook for 2 minutes

Add the milk and cook until creamy (to create a béchamel sauce)

Stir in the cream cheese, nutmeg, and black pepper

Layer the gratin dish with white sauce, potatoes, ham, peas, egg, and mozzarella cheese

Bake in the oven until golden brown and bubbly