Roasted Herb Salmon - Spas in Canada

Ingredients

• 45 oz salmon fillets – about 1 1/2 inches thick
• 2 tbsp Dijon mustard
• 2 tbsp fresh lemon juice
• 1 tbsp minced fresh thyme (or 1 teaspoon dried)
• 1 tbsp minced fresh rosemary (or 1 teaspoon dried)
• 1 tsp dried oregano
• ½ tsp Salt
• ½ tsp ground black pepper
• 1 small yellow onion thinly sliced
• 2 tomatoes thinly sliced
• Cooking spray