Preheat oven to 375 degrees F (on convect/fan setting). Cut potatoes into 3-4 chunks depending on size. Try to have the chunks relatively similar sizes.
Place potatoes into large microwave safe bowl, fill with water, mostly covering potatoes. Microwave 10 min, carefully (or skip microwave and boil the potato chunks for 6 min, they will still be quite hard). You may need to do two batches depending how large your bowl is.
Remove potatoes from water carefully, place into large baking pan. Drizzle liberally with oil (I used around 1/4 cup oil) coating all surfaces of potatoes. Sprinkle very generously with salt, then pepper to taste.
Bake for 25 min, toss carefully, bake another 25 min, toss, and check for doneness. You may need to bake another 10-20 min. Once cooked, transfer potatoes to serving bowl.
Add wine to baking dish and stir around to collect some potato flavor, then pour into a saucepan. Add onions, spices and oil.
Simmer gently until wine reduces by 2/3. Stir in lemon juice and butter, cook another 2 min. Spoon over roasted potatoes.
Top with the fresh parsley.