Preheat oven to 400°F.
Place oil in a 9 x 5 x 3-inch loaf pan and place in oven.
Place cubed challah in a colander and wet it quickly and lightly; put your fingers under the running water to lighten the flow, moving the colander so none of the bread gets too wet. Sprinkle with just enough water to dampen challah; do not drench it.
Squeeze out excess water. Challah should look and feel like wet rags.
In a large bowl, gently fold together challah, consommé mix, pepper, eggs, baking powder and bread crumbs. Don't over mix, but evenly disperse ingredients. The mixture should still be lumpy.
Remove loaf pan from oven and pour challah mixture into loaf pan.
Lower oven temperature to 375°F. Bake, uncovered, for 45 minutes until top is golden to dark brown and crunchy.
Cut into squares and serve warm.