This 5-ingredient patty melt is my aunt’s late-night diner order brought straight into a home kitchen. She swears the secret is cooking everything in the same pan so the bread soaks up all that buttery, beefy flavor, giving you a crunchy, greasy exterior and a gooey, melty center. It’s simple enough for a weeknight, but tastes like something you’d grab at a little roadside diner after a long day.