Prepare the Ovenand Muffin TinPreheat your oven to 375°F (190°C). Line a muffin tin with paper liners or lightly grease it with butter or cooking spray to prevent sticking.
Mix the Dry Ingredients In a large mixing bowl, whisk together theall-purpose flour, granulated sugar, brown sugar, salt, baking soda, baking powder, and cinnamon (if using). This ensures even distribution of the leather all-purposevening agents and prevents lumps in the batter
Combine the Wet IngredientsIna separate bowl, whisk the melted butter, eggs, milk, vanilla extract, andsourdough starter until smooth. The sourdough starter adds moisture andenhances the texture of the muffins, making them extra soft.
Bring the Batter TogetherPour the wet ingredients into the dry ingredients, stirring with a spatula. Mix until just combined—overmixing can make the muffins dense instead of fluffy.
Fold in the Chocolate ChipsGently fold in the chocolate chips, distributing them evenly throughout the batter. You can reserve a few to sprinkle on top before baking for a more visually appealing muffin.
Fill the Muffin CupsUsing a spoon or ice cream scoop, divide the batter evenly into the prepared muffin tin, filling each cup about ¾ full. This allows the muffins torise properly without overflowing.
Bake to PerfectionPlace the muffin tin in the preheated oven andbake for 18 to 22 minutes, or until a toothpick inserted in the center comesout clean or with a few moist crumbs
Cool and EnjoyRemove the muffins from the oven and let them cool in the pan for about minutes before transferring them to a wire rack. Enjoy warm with butter, or let them cool completely for a firmer texture.