Pulled Pork Barbecue Nachos

Melt butter in a medium saucepan over medium heat; whisk in flour until smooth. Cook, whisking constantly, 1 minute. Gradually whisk in milk; cook, whisking constantly, until mixture is thickened and bubbly. (Be careful not to scorch milk.) Stir in salt. Remove from heat, and stir in cheese until blended and smooth; keep warm.

Combine pork and barbecue sauce in a medium saucepan. Cook over medium heat, stirring occasionally, 2 to 3 minutes or until thoroughly heated; keep warm. Cook beans in a small saucepan over medium heat, stirring occasionally, 2 to 3 minutes or until thoroughly heated; keep warm.

Arrange half of chips in a single layer on a large serving tray. Layer with half each of beans, pork mixture, tomato, and cilantro. Drizzle with 1 cup cheese sauce. Repeat layers with remaining chips, beans, pork mixture, tomato, and cilantro. Drizzle with 1 cup cheese sauce. Top with sour cream, guacamole, and jalapeño peppers. Serve with remaining cheese sauce.