Preheat oven to 400°F (200 C). Mix thoroughly mustard, lemon juice, minced garlic, honey or maple syrup. Add salt and black pepper, to taste. Marinate the salmon fillets in this mixture about 10-15 minutes. Place the salmon fillet into the lightly oiled baking form and cover with the foil. Bake about 15-20 minutes. Enjoy your meal!!!