Pulse the cauliflower and onion in a food processor until it's finely chopped. Remove the cauliflower mixture from the food processor and place in a bowl. Next, process the chickpeas until mostly pureed. Leave it a little chunky.
In a large bowl, mix chia seeds, oats, baking powder, turmeric, salt, and black pepper until well blended. Next, add the cauliflower mixture and chickpeas to the chia seed mixture and stir until completely combined.
Scoop 1/4 cup balls out onto parchment lined baking sheets. Bake for 50 minutes to 1 hour at 425. Allow to rest for 20 minutes.