01 - Preheat oven to 400°F. Line a baking tray with parchment paper or lightly coat with oil.
02 - In a small saucepan, combine pineapple juice, honey, soy sauce, vinegar, olive oil, garlic, and ginger. Bring to a simmer over medium heat, stirring frequently. Simmer for 3–4 minutes.
03 - For a thicker glaze, dissolve cornstarch in 2 tbsp water, stir into the saucepan, and simmer 1–2 minutes until thickened.
04 - Pat salmon fillets dry with paper towels and place on the prepared baking tray. Season lightly with salt and pepper.
05 - Brush half of the glaze evenly over the salmon fillets. Reserve the remaining glaze for basting.
06 - Bake for 12–15 minutes until salmon flakes easily with a fork, brushing with the remaining glaze halfway through cooking.
07 - Remove from oven and garnish with diced pineapple and cilantro or green onion. Serve with lime wedges if desired.