01 -
Preheat your oven to 190°C (375°F). Line a muffin tin with paper liners or grease with butter.
02 -
In a large bowl, whisk together the flour, sugar, baking powder, baking soda, salt, and lemon zest.
03 -
In a separate bowl, mix the vegetable oil, melted butter, eggs, milk, and vanilla extract.
04 -
Gradually add the wet ingredients to the dry ingredients. Stir until just combined. Over-mixing can result in tough, dry muffins.
05 -
Gently fold the blueberries into the batter. Scoop the batter into the prepared muffin tin.
06 -
Bake for 20-25 minutes or until a toothpick inserted in the center of a muffin comes out clean.
07 -
Remove from the oven and let the muffins cool in the tin for 5 minutes. Transfer to a wire rack to cool completely before serving.