Balsamic Glazed Salmon

Preheat the oven to 400 degrees F. Place parchment paper on a baking sheet. In a small saucepan, bring the vinegar, Dijon mustard, and honey to a boil over medium heat. Reduce the heat to a simmer and cook until thick, about 10 minutes.  Brush the salmon filets with half of the balsamic glaze and reserve the other half. Bake the salmon for 10-14 minutes, or until the salmon is cooked through and flakes easily with a fork. Remove the salmon from the oven and pour the remaining glaze over the salmon. Top with green onion and serve hot. MAKE IT GLUTEN-FREE: Confirm all ingredients you are using are gluten-free and this recipe can be gluten-free.