Cut the potatoes lengthwise into ½ to ¾ inch slices (depending on how thick you desire them to be). Then cut those slices into equal portions, either ½ to ¾ inch according to your initial cut.
Place the cut potatoes into cold water and soak for at least 30 minutes. Drain the water and dry the potato slices really well with a towel.
Combine the melted butter, vegetable oil, and seasoned salt, and place in a large resealable plastic bag. Add in the potatoes to coat.
On a well-greased cookie sheet, or lined with parchment paper, place the potato wedges in a single layer and bake, uncovered, at 450°F (232°C) for 20-25 minutes (or until tender), turning once halfway through cooking time. Thicker steak fries may need up to 45 minutes to bake.
Notes
STORE leftover baked French fries in an airtight container and refrigerate for up to 3 days. To FREEZE, lay the fries on a baking sheet to freeze individually, then transfer to a freezer bag for up to 2 months.To REHEAT frozen fries, bake at 400°F (204°C) for 10-15 minutes or until crispy. Avoid microwaving as it can make them soggy.