Peel and dice the sweet potatoes. Then, season them with oil and salt and roast for 20 minutes at 200°C (390°F).
Once roasted, mash the sweet potatoes with a fork or potato masher in a mixing bowl.
In a food processor, pulse black beans with chopped onions and fresh parsley just until you have a chunky dough rather than a smooth mix.
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{{/ items}} {{^ items}} {{/ items}}Combine the bean mix with mashed potatoes and add buckwheat flour, cumin, coriander, cayenne pepper, salt, black pepper, and lemon zest. Stir until the ingredients are incorporated.
Scoop a handful of the falafel mixture, roll it int the palm of your hands and then flatten it down on a baking tray.
Bake the falafels in the oven for 20 minutes at 220°C (430°F) flipping them halfway through cooking time. Serve with lettuce, grated carrots, and a drizzle of oil or lemon juice.