Prepare the oven and pan

Preheat oven to 375°F (190°C).

Line a muffin tin with paper liners or grease lightly with butter/oil.

Mix the dry ingredients

In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.

Mix the wet ingredients

In another bowl, whisk together milk, oil, eggs, and vanilla extract until smooth.

Combine the mixtures

Pour the wet ingredients into the dry mixture.

Gently fold together until just combined (do not overmix; batter should be slightly lumpy).

Add extras (optional)

Fold in chocolate chips, blueberries, or nuts for extra flavor.

Bake

Divide the batter evenly among the muffin cups.

Bake for 18–22 minutes, or until a toothpick inserted in the center comes out clean.

Cool and enjoy

Let muffins cool for 5 minutes in the pan, then transfer to a wire rack.

Serving and Storage Tips