01 - 
                Once they come out of the oven, let the potatoes cool off for a few minutes. If you want, sprinkle on some chopped parsley before digging in.
              
              
              
                02 - 
                Pop the tray in the oven and bake for about 25–30 minutes. Give them a little stir halfway through. You want them brown and crunchy on the outside.
              
              
              
                03 - 
                Line your tray with parchment. Lay the potatoes out flat so they cook nice and even.
              
              
              
                04 - 
                Drop your potato halves in the bowl and toss until every piece is covered in the mustardy mix.
              
              
              
                05 - 
                Grab a big bowl. Mix up the olive oil, both mustards, garlic and onion powders, salt, and black pepper until it’s all blended and smooth.
              
              
              
                06 - 
                Crank your oven up to 220°C to get it hot and ready.