Preheat oven to 400°F
Prepare the sweet potatoes.
Steam or boil the broccoli according to your preferred preparation method. I simply microwave it with a bit of water in a microwave-safe steamer for 5 minutes, until very soft. Drain and mash with a fork.
Combine all the remaining ingredients with the broccoli and mix well until fully incorporated.
Measure out about ½ cup of the mixture and flatten into a burger. Place on a Silpat or other nonstick silicone baking mat or piece of parchment paper.
Bake for 30-45 minutes, or until you can turn them over easily without them falling apart. Carefully flip the burgers with a spatula and cook for another 10-15 minutes.
