Zucchini-Chocolate Chip Muffins

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Grease a 12-cup muffin tin or line cups with paper liners.

Step 2
Combine flour, sugar, baking soda, cinnamon, and salt in a large bowl. Whisk oil, milk, egg, lemon juice, and vanilla extract in a separate bowl. Stir wet ingredients into dry ingredients until just moistened; fold in zucchini, chocolate chips, and walnuts.

Step 3
Spoon batter into the prepared muffin cups, filling each 2/3 full.

Step 4
Bake in the preheated oven until tops spring back when lightly pressed, about 20 to 25 minutes. Cool in the tin briefly before transferring them to a wire rack to cool completely.