1. Remove casing from sausage by first making a shallow cut along the length of of the sausage. Peel off casing (this step is optional and you can leave the casing on if you prefer, however this is how I prefer it). Cut each sausage in half length-wise and then cut each half into bite-size pieces. Place sausage pieces into a frying pan and cook over medium-high heat until browned.
2. Place black beans in a small saucepan and heat on low until hot.

Cheese Sauce

1. Melt butter in a large saucepan over medium heat. Whisk the flour into the melted butter and cook, stirring constantly, for about 2-3 minutes.
2. Gradually whisk in milk. Cook over medium-low heat, whisking often, making sure to whisk is frequently scraping the bottom of the pan. Cook until mixture has thickened and has just barely began to boil. Lower heat to low and immediately begin whisking in the cheese. Turn off heat and continue to whisk until cheese is completely melted. Season with salt and pepper to taste.

To assemble nachos:

1. Each guest takes a place and place a desired amount of tortilla chips on their plate. Top chips with toppings, as desired, in any order: cheese sauce, smoked sausage, black beans, and optional toppings.