Preheat the oven to 350°F (175°C) and grease a 9x5-inch loaf pan.

In a large mixing bowl, combine mashed sweet potatoes, sugar, vegetable oil, milk, eggs, and vanilla extract. Whisk until smooth.

In another bowl, whisk together flour, baking soda, cinnamon, nutmeg, and salt.

Gradually add dry ingredients to wet ingredients, stirring gently until just combined.

Pour the batter into the prepared loaf pan and smooth the top with a spatula.

Bake for 55 to 60 minutes, covering with foil halfway through to prevent browning.

Once done, let it cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.