Per portion: Heat 1 tsp butter in 6-inch skillet. Add 1 Tbsp onion; sauté. Add 1 sliced potato with salt, pepper and nutmeg; stir gently.
Smooth layer of potatoes; add 1/4 cup milk. Simmer 1 minute. Sprinkle with 1 ounce Parmesan cheese. Pour 2 Tbsp cream over top and sprinkle with 1 tsp jalapeño.
Bake at 350°s; F until golden brown, about 15 minutes.Makes 4 Source: