Heat oven to 425 degrees F. Place cauliflower on a baking sheet. Drizzle a little bit of olive over the cauliflower. Place baking sheet in the oven and roast for 17 to 20 minutes.
When the cauliflower is finished, toast bread and spread Land O Lakes® Butter with Canola Oil with a butter knife onto each slice of bread. Next, spread goat cheese on each slice of bread. Fold prosciutto in half and place on top of each slice of bread. Top with cauliflower.
Stack one slice of bread on top of another and do the same one with other toasts to create to two double decker toasts. Top each with parsley and serve immediately.