Preheat the oven to 400°F. In a large bowl, mix the onion powder, paprika, thyme, crushed garlic, rosemary, parmesan cheese, and salt and pepper together.
Step 1
Cut the potatoes into wedges by slicing them in half lengthways and then into thirds lengthways too.
Step 2
Toss the sliced potatoes into the oil and spices to coat all over.
Step 3
Arrange the wedges into the baking dish skin side down and pop into the oven to bake for 30-35 minutes.
Step 4