In a medium sauce pan, bring 4 cups of water, 1 tablespoon coconut oil, and a pinch of salt to a boil. Once boiling, stir in wild and brown rice. Bring mixture back to a boil, cover, reduce heat to low then cook for about 35 minutes (or until the rice has absorbed all the liquid).
Bring another large pot of water to boil. Once boiling, add sweet potato chunks and cook for about 10 minutes (or until the sweet potato is easily pierceable with a butter knife).
Add cooked sweet potato chunks to a large bowl then mash using two forks. Using a wooden spoon, mix in cooked rice, panko, and all seasonings (cumin, salt, pepper, garlic, and cayenne) and stir until mixture is well combined.
Form mixture into 8 equally sized patties. Heat a large nonstick skillet over medium, then add 1 tablespoon coconut oil. Once oil is melted and hot, add 4 patties to the skillet and cook 6-8 minutes on each side. Repeat with remaining 4 patties and tablespoon of coconut oil.
Place your sweet potato rice patty on a bun, add desired toppings and top bun then EAT.