Toast your pumpkin seeds by heating a medium pan over medium heat. Add pumpkin seeds and stir occasionally as you allow them to toast for about 4 minutes, or until they start to get golden and/or start to pop. Remove pumpkin seeds from the pan and set aside. Keep pan on the stove top (you'll use it in the next step).
Sautee your spinach by tossing about half of it into your heated pan. Using tongs (or another large utensil), continue tossing it as it cooks down. This shouldn't take long. As it cooks down and there is more room in the pan, add in the rest of your spinach. Once all of your spinach is bright green, remove from heat immediately. This entire process should take 1-2 minutes.
Assemble your bowls! To each bowl add your roasted sweet potatoes, seasoned black beans, brown rice, and sauteed spinach. Top each bowl with pumpkin seeds, avocado, creamy cilantro dressing, and an optional lime wedge. Enjoy!