Preheat oven to 375F degrees. Grease a cookie sheet or line it with parchment paper.
Saute onions and mushrooms in oil until tender.
Using your food processor, add chickpeas, chickpea flour, cumin, chili powder, garlic, lemon juice, parsley, sea salt and black pepper. Blitz until well blended.
Add mushrooms and onions, blitz again until blended.
Take 1 1/2 tbsp of mix and form into balls. Don't worry if they are sticky and don't form into perfect balls. Mine didn't :)
Bake for 30 minutes. At 15 minutes flip them. I used a spatula and flattened them a bit so they weren't such a wonky shape.