Sweet Potato & Black Bean Nachos

Ingredients

• 2 medium sweet potatoes, thinly sliced into rounds
• 1 tablespoon olive oil
• 1/2 teaspoon chili powder
• 1/2 teaspoon ground cumin
• 1/4 teaspoon garlic powder
• Salt
• black pepper
• 1 (15-ounce) can black beans, rinsed and drained
• 1/2 cup frozen corn
• 1 cup shredded Mexican cheese blend
• 1/2 cup salsa, for serving
• 1/4 cup guacamole, for serving
• 2 tablespoons chopped fresh cilantro, for garnish (optional)