Cut the cheese sticks in half. You will have 24 pieces. Place the cheese in the freezer until the cheese is frozen, several hours or overnight. (I place them on a small, parchment or wax paper-lined tray so they don’t freeze to the pan.)
In small bowl, whisk the egg. Place the flour on a small dish or in a zipper-top bag. In separate bowl or bag, thoroughly combine the panko, breadcrumbs, Parmesan cheese, dried herbs and salt.
Dip the frozen sticks in the flour, shaking off the excess. Then dip them in the egg, followed by the crumb mixture. Be sure to coat the ends, too. This coating will form a thin crust that will give structure to the cheese as it begins to soften. (I find it easiest to use one hand as the hand used for dipping will get rather messy.)
Repeat this process with the remaining pieces of cheese, placing them on a parchment or wax paper-lined tray as you go. Place the cheese back in the freezer until ready to bake. The cheese must be completely frozen for good results. Once frozen, you may transfer the sticks to a zipper-top back and store until ready to use.
When ready to bake, preheat the oven to 400 degrees F. Line a baking sheet with aluminum foil and lightly coat with oil.
Place the frozen cheese sticks on the baking sheet, and spray the tops of the mozzarella sticks with olive oil. Bake 3-4 minutes. Turn the sticks over, and bake an additional 3-4 minutes or until the cheese sticks are lightly golden and just soft through the center. Watch them VERY closely after you flip them so they don’t melt. Serve immediately with optional marinara sauce for dipping. Like any cheese, these will firm up as they cool…but will still taste great!