Grind the oats into a course flour in the food processor. Add the breadcrumbs, chickpeas, beets, Cajun seasoning, aquafaba, and salt and pepper to the processor and pulse until the ingredients form a stiff ball.
Carefully remove the blade from the bowl and form the mixture into patties. I made five large patties, you can make them smaller or larger if you like.
Heat them all the way through (approximately 8 minutes) on a skillet or on the grill on medium heat, flipping every two minutes. Brush them with a thin layer of oil to prevent sticking. Don’t overcook or they’ll dry out.
You can store them in an airtight container in the refrigerator for up to a week or in the freezer for one month.