Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
Peel and cut the sweet potato into 1/2-inch cubes. Toss with a light spray of olive oil, salt, and pepper.
Cut the broccoli into small florets and lightly season with salt and pepper. Set aside.
Slice the tempeh into thin, bite-sized pieces. For extra crispiness, steam the tempeh for 10 minutes to remove any bitterness, then pat dry.
Heat a non-stick skillet over medium heat. Spray lightly with olive oil and add the tempeh slices. Cook for 3-4 minutes on each side until browned and crispy.
At the same time, roast the sweet potato cubes in the preheated oven for about 20 minutes, turning halfway, until tender and slightly caramelized. Add the broccoli for the last 10 minutes of roasting.
Once everything is cooked, plate the crispy tempeh alongside the roasted sweet potato and broccoli. Sprinkle the nutritional yeast evenly over the dish for a savory finish.
Serve immediately and enjoy your balanced, whole foods plant-based lunch.