Preheat oven to 400 degrees Fahrenheit (200 degrees Celsius).
Toss cubed sweet potatoes with olive oil, smoked paprika, salt, and pepper on a parchment-lined baking sheet.
Roast sweet potatoes for 25 to 30 minutes until tender and slightly browned, tossing halfway through.
Rinse quinoa under cold water. Combine quinoa and water in a medium saucepan. Bring to a boil, then reduce heat to low, cover, and simmer for 15 minutes or until water is absorbed.
Remove quinoa from heat and let sit covered for 5 minutes, then fluff with a fork.
In a small bowl, whisk together tahini, lemon juice, maple syrup, and warm water until smooth to create the dressing.
Lightly steam or sauté baby kale until just wilted.
Divide quinoa into four bowls. Top with roasted sweet potatoes, black beans, wilted kale, and avocado slices.
Drizzle with the prepared tahini dressing before serving.