Preheat your oven to 375°F (190°C). Grease a 9×5 inch loaf pan or line it with parchment paper.
In a large mixing bowl, whisk together the all-purpose flour, baking powder, salt, and sugar until well combined.
In a separate bowl, beat the egg with the milk and vegetable oil until fully blended.
Pour the wet ingredients into the dry ingredients and stir gently until just combined. Do not overmix; the batter will be slightly thick.
Transfer the batter into the prepared loaf pan and spread it evenly.
Bake in the preheated oven for 25 to 30 minutes, or until the top is golden brown and a toothpick inserted in the center comes out clean.
Remove the bread from the oven and allow it to cool in the pan for 10 minutes.
Turn the bread out onto a wire rack and let it cool completely before slicing.