Preheat the Oven: Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Mix the Ingredients: In a large bowl, combine the cooked quinoa, black beans, breadcrumbs, cilantro, red onion, garlic, cumin, chili powder, salt, pepper, and the beaten egg. Mix until well combined.
Form the Bites: Using your hands, form the mixture into small balls or patties and place them on the prepared baking sheet.
Brush with Olive Oil: Lightly brush the tops of the bites with olive oil for a crispy finish.
Bake: Bake in the preheated oven for 20-25 minutes, or until golden brown and crispy, flipping halfway through.
Serve: Allow to cool slightly before serving. Enjoy with a dipping sauce of your choice!