Spray an 8-inch microwave-safe baking dish with nonstick cook
ing spray. Place 1/3 of the potatoes and 1/2 of the onions on
bottom of dish and sprinkle with 1/3 of the cheese and 1/2 of the
herbs. Repeat layers, then top with the last 1/3 of the potatoes,
layering potatoes so that there is a solid layer of potatoes with no
gaps; sprinkle with remaining cheese.