Preheat and prep the pan: Heat your oven to 400°F (200°C). Line a rimmed baking sheet with foil or parchment for easy cleanup.
Lightly oil the surface so the salmon won’t stick.
Mix the glaze: In a small bowl, whisk together the maple syrup, Dijon mustard, soy sauce, lemon juice, garlic, smoked paprika, and red pepper flakes. Taste and adjust—add more mustard for tang, more maple for sweetness, or more lemon for brightness.
Season the salmon: Pat the fillets dry with paper towels. Sprinkle both sides with salt and pepper.
Place them skin-side down if using skin-on fillets.
Glaze generously: Spoon about two-thirds of the glaze over the salmon, coating the tops and sides. Reserve the rest for a final brush or drizzle after cooking.
Bake until just done: Roast for 10–12 minutes, depending on thickness. Salmon is done when it flakes easily with a fork and the center is still slightly translucent.
For thicker fillets (over 1 inch), add 2–3 minutes.
Optional broil for caramelization: Switch to broil on high for the last 1–2 minutes to get glossy, lightly charred edges. Watch closely—sugars can burn fast.
Finish and rest: Remove from the oven and brush with the remaining glaze. Let rest for 2 minutes to set the juices.
Serve: Add a squeeze of fresh lemon, sprinkle with herbs, and plate with your favorite sides—roasted vegetables, rice, quinoa, or a crisp green salad.