Rinse the oranges. Grate the peel of one orange using a fine grater, ensuring to avoid the white pith as it has a bitter taste.

Squeeze out the juice from the oranges. You should ideally have about 150ml of juice.

Whisk together the eggs and sugar until well combined.

Gradually incorporate the melted and cooled butter into the egg-sugar mixture, continuously stirring as you do so.

Next, add the orange juice, grated orange peel, and vanilla extract into the mixture. Stir well to combine.

Gently fold in the flour and baking powder using a whisk. Make sure the batter is smooth and free of lumps.

Transfer the batter into a baking pan lined with parchment paper.

Bake in a preheated oven at 200 degrees for approximately 45 minutes.

To ensure doneness, perform a toothpick test. If it comes out clean, your orange bread is ready. If not, leave it in the oven for an additional 5-10 minutes.

Allow your delightful orange bread to cool, then slice it up and serve with joy.

Enjoy your meal!