Preheat your oven to 350°F (175°C) and prepare a muffin tin by lining it with paper liners or greasing it lightly.

In a large mixing bowl, combine the flour, sugar, baking powder, and salt. Mix well to ensure the dry ingredients are evenly distributed.

In a separate bowl, whisk together the milk, vegetable oil, eggs, and vanilla extract.

Pour the wet ingredients into the dry ingredients and stir until just combined. Be careful not to over-mix; it's perfectly fine if there are a few lumps!

Fold in your chosen additional delights like chocolate chips or fresh fruit to add a special twist to your muffins.

Spoon the batter into the prepared muffin tin, filling each cup about two-thirds full.

Bake for 18-20 minutes or until a toothpick inserted into the center comes out clean.

Remove from the oven and let them cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.