To prepare a barbies blueberry zucchini bread with oatmeal and walnuts recipe, first preheat the oven to 350?F (180?C) and prepare your oven rack to the lowest setting. Peel and slice your zucchini in half lengthwise. Scoop out the inside of the zucchini halves and place them on the prepared baking sheet. Bake for 20 minutes or until browned. Remove from oven and allow to cool for 5 minutes before slicing.