Orange-Honey-Mustard Baked Chicken Breasts

INGREDIENTS

boneless, skinless chicken breasts, boneless skinless

1/4 cup

Yellow onion or shallot

2 tbsp

Dijon mustard

3 tbsp

Honey

2 tbsp

Mustard, whole-grain

1/2 tsp

Black pepper, freshly ground

1 tbsp

Kosher salt

1 cup

Orange juice, freshly squeezed

1/4 stick

unsalted butter, unsalted

2 tablespoons finely grated orange zest (from about 2 oranges)