Divide the batter evenly between the two prepared loaf pans.
Smooth the tops of the batter with a spatula.
Remove the chilled streusel topping from the refrigerator.
Sprinkle the streusel evenly over both loaves, covering the tops fully and reaching the corners.
Bake for 40 to 45 minutes, or until the tops are golden and crisp.
Check for doneness by inserting a toothpick into the center of each loaf. The toothpick should come out clean or with a few moist crumbs.
Remove the loaves from the oven.
Allow the breads to cool in the pans for 10 minutes.
Carefully remove the loaves from the pans and transfer them to a wire rack.
Allow the loaves to cool completely before slicing and serving.