Preheat oven to 400°F and line a baking sheet with parchment paper.
Peel and slice the plantain into half-moons and cut the tempeh into small cubes.
Toss the plantains and tempeh with avocado oil, sea salt, garlic powder, and smoked paprika.
Spread the mixture on the baking sheet and roast for 20 minutes, flipping halfway, until the plantains are golden and the tempeh is crisp.
While roasting, rinse the black beans and warm them in a small saucepan over medium heat.
In a small bowl, whisk together the Greek yogurt, nutritional yeast, and lime juice to create the crema.
Place the baby spinach in a large bowl, top with the roasted plantains, tempeh, and warm black beans.
Drizzle the lime crema over the bowl and serve immediately.