Step 1Preheat the oven to 425 degrees. Stir together the olive oil, brown sugar, and blackening seasoning (or another seasoning blend). For a simple option, just use chili powder.
Step 2Cover a baking sheet with foil. Place the salmon on the foil and brush the salmon with the olive oil and spice mixture. Roast for 12-15 minutes until the salmon is cooked through and flaky. The exact cooking time will depend on the thickness of the salmon. Grilling option: Place the salmon on foil or skin-side down on an oiled, preheated grill. Cook over medium-high heat for 10-15 minutes until flaky.
Step 3While the salmon cooks, make the corn salsa by combining the corn, red onion, poblano pepper, lime juice, cilantro, salt, and pepper. Add mango, pineapple, or avocado if desired.