01 - Set oven to 400°F and line a baking sheet with parchment paper or lightly grease it.
02 - Whisk together Dijon mustard, honey, whole grain mustard (if using), lemon juice, olive oil, minced garlic, salt, and black pepper until smooth.
03 - Pat salmon fillets dry with paper towels and arrange skin-side down on the baking sheet.
04 - Brush the honey mustard mixture generously over tops and sides of each fillet.
05 - Bake fillets for 12 to 15 minutes or until salmon flakes easily with a fork and reaches an internal temperature of 145°F.
06 - Remove from oven, sprinkle chopped parsley over fillets, and serve with lemon wedges.