Ingredients:

• 2 tablespoons light brown sugar, tightly packed
• 1 tablespoon Dijon mustard
• 1 tablespoon honey
• 1 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper
• 1/4 teaspoon crushed red pepper flakes
• 4 (8-ounce) skin-on salmon filets