I tried this recipe at 350°, 375° and 400° F. The higher temperature resulted in a lighter, fluffier muffin with a crisp muffin top. Here are the different times for each temperature. At 350° F, bake muffins for 22 to 25 minutes. At 375° F, bake muffins for 18 to 20 minutes. At 400° F, bake muffins for 15 to 17 minutes.