When you want to make blackened fish for dinner, it's important to start with the best blackening seasoning. This homemade version combines a bunch of amazing spices. Don't be surprised if you are tempted to double the amounts and save some for the next time you crave blackened fish. In addition, if you store the seasoning mixture in an airtight container it makes for a great gift. This version of blackened tilapia is baked in the oven instead of searing on the stovetop. This means dinner is ready in 20 minutes and cleanup is a breeze. You also won't have to worry about turning on the oven vent or opening a window from the smoke that results from searing on the stovetop. While the tilapia is baking, there's just enough time to make a homemade tartar sauce to serve with the fish. To plate, serve the blackened tilapia over a bed of white rice, then sprinkle chopped fresh parsley over the fish for a burst of color. Serve with lemon wedges to squeeze over the fillets just before taking that first perfect bite.