To get the best results for your baked French fires, it is important to space the cut potatoes out on the pan in a single layer, so they aren’t touching each other. The bake time for French fries is an average of 30-40 minutes at 400-450 degrees Fahrenheit. This is average baking time; if you have thinner cut fries, expect to bake fries for 30 minutes. If you like your fries extra crispy and then you may want to cook them for 35 minutes. For a thicker cut, the bake time will be 35 minutes to 40 minutes depending on how crispy you and your loved ones like your fries to be. To get your fries properly crispy on all sides, toss them halfway through the cook time.