In a food processor, blitz onions, black beans, peppers, and coriander until you have a chunky mixture.
In a mixing bowl, combine the bean dough with oat flour, flaxseeds, water, garlic powder, paprika, chilli powder, and oregano into a creamy batter.
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{{/ items}} {{^ items}} {{/ items}}To make a fritter, pour a spoonful of batter over a baking tray brushed with oil, and press down to give it a flat pancake-like shape.
Bake the bean fritters for 20 minutes at 235°C (455°F), then flip them and grill them for 5 minutes until crisp.