Heat a cast iron skillet directly over hot coals in a barbeque until smoky hot. Alternatively, heat the skillet on the stove over high heat until very hot. Sprinkle Cajun Spice on the fish, or, for a more robust flavor, dredge the fillets in the Cajun Spice, coating both sides of fish. When the pan is hot, pour approximately 2 tablespoons of clarified butter into pan, and reduce heat to medium-high. Carefully add as many fillets as will fit in the skillet, leaving at least 1/2-inch in between each. Cook the fish for approximately 2 minutes on the first side, and then flip the fillets with a fish spatula. While flipping the fish, add another 1 to 2 tablespoons clarified butter to the pan, and sear the fish on the second side for 1 to 2 minutes, or until the fish is cooked through. Repeat with remaining fish fillets, adding more butter as needed.

Serve the halibut on a bed of white or wild rice. Pour the Mango Chutney over the fish, and serve with a green salad on the side.