Begin by preheating your oven to 425°F (220°C). While the oven is heating, lightly grease a baking dish with a drizzle of olive oil to prevent the chicken from sticking.
In a medium-sized mixing bowl, combine the pure maple syrup, Dijon mustard, olive oil, minced garlic, chopped rosemary, and a generous pinch of salt and pepper. Use a whisk to blend these ingredients together until the mixture is smooth and well combined.
Arrange the chicken breasts in the greased baking dish in a single layer. Pour the delicious maple Dijon marinade over the chicken, making sure that each breast is generously coated on all sides with the sauce.
For optimal flavor infusion, let the chicken marinate at room temperature for 15-20 minutes if your schedule allows. This brief marinating time helps to deepen the flavors.
Place the baking dish in the preheated oven and bake the chicken for 20-25 minutes. The chicken is done when it is cooked through and reaches an internal temperature of 165°F (75°C). To enhance the flavor, baste the chicken with the pan sauce halfway through the cooking time.
After baking, carefully remove the chicken from the oven and allow it to rest for about 5 minutes. This resting period helps the juices redistribute, keeping the chicken tender and moist.
For presentation, slice the chicken breasts against the grain and arrange them on a platter. Optionally, garnish with freshly chopped parsley to add a pop of color and freshness before serving.