In a large skillet add olive oil and diced onion. Start browning onion over medium heat.
Add coleslaw mix and garlic. If your skillet isn’t big enough to hold all of the coleslaw, add it in batches. It will cook down.
Add the seasonings for the cabbage mixture, but not the lime juice yet.
Add the black beans and stir to combine. Cook until the cabbage is cooked to your liking. Some people like this a little crunchy and other want this cooked until it is soft.
When this is cooked to your preference, add the lime juice.
Start on the fish. Sprinkle the fish with half the lime juice and then half of the seasonings. I mix my seasonings in a small container to make this easier.
In a medium to large skillet add 1 T olive oil over medium heat. Add the tilapia filets, seasoned side down, to the skillet. Sprinkle with the rest of the lime juice and seasoning.
Cook 2-4 minutes per side, depending on the thickness of the filets.