Preheat your oven to 350°F. Generously grease an 8½×4½-inch loaf pan with non-stick cooking spray or line it with a sheet of parchment paper, leaving an inch of overhang on the long sides to act as handles for a clean extraction.

In a medium bowl, whisk together the all-purpose flour, baking soda, and salt until completely combined and aerated, then set the dry mixture aside.

In a large mixing bowl, combine the mashed bananas, vegetable oil, granulated white sugar, large eggs, and fresh orange zest. Whisk vigorously for 1 full minute until the sugar crystals begin to dissolve and the mixture transforms into a smooth, uniform liquid baseline.

Pour the dry flour mixture into the wet bowl, switching to a silicone spatula to fold the ingredients together just until the flour lines disappear; avoid over-mixing at this stage, as developing tough gluten networks will ruin the bread's tender, light texture.

Gently fold the coarsely chopped fresh cranberries directly into the thick batter until they are evenly speckled throughout.

Scrape the heavy banana batter into your prepared loaf pan, using the spatula to smooth the top surface into a flat, level sheet.

Place the pan on the middle oven rack and bake at 350°F for 55 to 60 minutes. Watch for the loaf to dome up completely with a central split, checking that a toothpick inserted straight into the center of the crumb comes out clean or with a few moist crumbs.

Remove the bread from the oven and let it cool in the pan flat on a wire rack for 10 minutes. Lift the warm loaf out using the parchment paper handles and place it onto a serving plate.

While the loaf rests, prepare the simple citrus glaze. Whisk the sifted powdered sugar and fresh orange juice together in a small bowl until it forms a smooth, pourable consistency. Drizzle the glaze uniformly across the top of the warm bread, allowing the melting sugars to seep deep into the crust before slicing.