Heat two tablespoons of olive oil in a pan on medium heat. Toss in the onions, garlic, corn, and spinach until softened.
Transfer the mixture to a food processor and pulse with beans, lime juice, salsa, cumin, chili powder, salt, and pepper until combined. Then, add in oats, cashews, and cilantro; pulse.
Form into balls and flatten into patties for grilling.
Transfer the patties to a pan and grill for two to three minutes on each side.
Let cool for a couple minutes and put in between Ball Park Burger Bun with your favorite toppings.