Preheat an oven to 350 degrees F (175 degrees C). Lightly grease a baking sheet.

Beat the vegetable oil and sugar with an electric mixer in a large bowl. Add the room-temperature eggs one at a time, allowing each egg to blend into the sugar mixture before adding the next. Combine flour, salt, and baking powder in a small bowl. Stir flour mixture into sugar mixture until just incorporated. Fold in the pecans and cherries; mixing just enough to evenly combine.

Using lightly greased hands, divide dough into 2 equal portions. Form 2 loaves about 10 inches long and 3 inches wide and place on the prepared baking sheet. Sprinkle with cinnamon sugar.

Bake in the preheated oven until firm, 25 to 30 minutes. Remove from oven and allow to cool slightly. Cut each loaf into 3/4 inch slices. Place slices cut side up, back on the baking sheet. Increase oven heat to 400 degrees F (200 degrees C) and return mandlebrodt to the oven. Toast until edges become golden brown, about 5 minutes.

Cool in the pans for 10 minutes before removing to cool completely on a wire rack. Store in an airtight container.