Cut the potatoes into wedges and place them in a large heat-proof glass bowl. Pour boiling water over the potato wedges and let them sit until the water cools, about 20 minutes.
4 large potatoes
Meanwhile, mix all of the spices in a bowl (this will be the Cajun seasoning). Preheat oven to 450ºF. Drain the potatoes and pat them dry.
Cover a large baking sheet with foil or a silicone baking mat. Brush it with canola oil.
In a bowl, combine the potatoes with 2 tablespoons of canola oil. Add the Cajun seasoning and toss until the potatoes are evenly coated in spices.
Layer the potato wedges onto the baking sheet. Do not overlap.
Bake for 20 minutes in the preheated oven. Flip and bake for about 10-20 more minutes, or until golden and crispy. Keep an eye on them.
Serve the Cajun fries with ranch sauce.
Notes
Storage: If you do have leftovers, they can be stored in an airtight container. Keep them in the refrigerator for up to 3 days.
Reheating method #1: To reheat the fries, either lay them out in a single layer on a baking pan and warm up in the oven (400 degrees Fahrenheit for about 8 minutes).
Reheating method #2: Or, heat a teaspoon of oil in a skillet over medium heat. Add the fries, letting them crisp on the bottom completely before flipping them to crisp both sides. Remove the fries from the oil and dry on paper towels.
Wedges or sticks: While I like to make wedges out of the potatoes, you can cut them into thinner sticks if you like, but watch them in the oven because they might be quicker to cook.