Step 1

Preheat the grill to medium heat.

Step 2

In a small mixing bowl, whisk together the sour cream, mayonnaise, mustard, cheese and lemon juice to taste.

Step 3

Slice the cauliflower head into 1/2 to 3/4-inch thick slices (see Tip below). Brush one side of cauliflower with olive oil. Place on a grill pan, oiled side down, cover and grill about 5 to 7 minutes or until starting to brown.

Step 4

Turn slices over and brush top with oil, then top with Parmesan sauce. Cover and grill for an additional 5 to 6 minutes or until the cauliflower is crisp-tender. Season to taste with salt and pepper and serve immediately, garnishing with chopped parsley.