Next, combine the black beans, corn, lime juice, and salt in a small bowl. Mix well and set aside.
Fill a 10-inch cast iron skillet with the sweet potato chips. Top them evenly with the crumbled goat cheese, bean and corn mixture, onion, and jalapeno.
Bake for about 10 minutes to melt the goat cheese and warm everything through.
Top with avocado slices and serve.
Notes
Sweet potato chips: You can make homemade sweet potato chips for this recipe if you’re feeling ambitious - we like to use this recipe by A Spicy Perspective. Note that if you choose this method, you’ll have to leave yourself plenty of time to make the chips as they take about 45 minutes. We also find that homemade chips tend to get a little soggy when baking the nachos, so you’ll probably want to eat them with a fork if you go this route! For more tips on making homemade sweet potato chips, read our blog post above.Alternatively, you can use store-bought sweet potato chips - like these ones - for quick and easy prep and an extra sturdy nacho base.If you don't have a cast iron skillet: Use any oven-safe baking dish, or even a sheet pan lined with foil. Just make sure to pile up the chips so they're overlapping slightly.Serving size: These nachos can serve about 4 people as a light appetizer or snack. If you're planning on having these nachos as a meal, it will serve about 2 people.Leftovers: Leftover sweet potato nachos don’t really keep the best, so we recommend only making as much as you’re going to eat in one sitting. That being said, no nacho should ever go to waste! So if you do happen to have some leftovers, store them in an airtight container in the fridge for up to 3 days. You can reheat them in the oven at 300 degrees F for about 15 minutes. Just note that they will likely be soggy, like any other leftover nachos.