There is a larger baking time difference in the orange bars versus the original key lime bar recipe. The orange bars take around 10-20 minutes to bake. Why? Sometimes I find orange juice is more watery than key lime juice, which could cause the filling to take longer to bake and set up in the oven. My filling took closer to 20 minutes in the oven to set up, but yours may take closer to 10. Check at the 10 minute mark and increase in 5 minute increments until filling is just about set. If it jiggles slightly, that's okay, but it should not be sloshing around in the pan. If you go past the 20 minute mark, that's okay, too. Again, it shouldn't be sloshing around. You want it slightly jiggly and just about set.