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Instructions
Place salmon fillets on a baking sheet; season with salt and black pepper.
Combine pecans, maple syrup, vinegar, paprika, chipotle powder, and onion powder in a food processor; pulse until crumbly. Spoon pecan mixture on each salmon fillet, coating entire top surface. Refrigerate coated salmon, uncovered, for 2 to 3 hours.
Preheat the oven to 425 degrees F (220 degrees C).
Bake in the preheated oven until salmon flakes easily with a fork, 12 to 14 minutes.