Cauliflower Roasted in Dijon Mustard and Lemon Butter Sauce

Name: Cauliflower Roasted in Dijon Mustard and Lemon Butter Sauce
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: Mediterranean
Ingredients: 1 head cauliflower (cut into florets); 6 tablespoons butter; 1 Lemon (Juice & grated rind); 2 tablespoons Dijon mustard ((wholegrain preferable)); 1 teaspoon salt; 1 tablespoon fresh parsley, chopped (optional (for garnish)); 1 tablespoon olive oil