You can keep these muffins for the next day and they will even taste better.
Ingredients
2 cups all-purpose flour
1 cup white sugar
¾ cup chocolate chips
½ cup unsweetened cocoa powder
1 teaspoon baking soda
1 egg
1 cup plain yoghurt
½ cup milk
1 teaspoon vanilla extract
½ cup vegetable oil
¼ cup chocolate chips
Method
Preheat oven to 400 degrees F (200 degrees C). Grease 12 muffin cups or line with paper muffin liners.
Combine flour, sugar, 3/4 cup chocolate chips, cocoa powder, and baking soda in a large bowl. Whisk egg, yoghurt, milk, vanilla, and vegetable oil in another bowl until smooth; pour into the chocolate mixture and stir until batter is just blended. Fill prepared muffin cups 3/4 full and sprinkle with remaining 1/4 cup chocolate chips.
Bake in preheated oven until a toothpick inserted into the centre comes out clean, about 20 minutes. Cool in the pans for 10 minutes before removing them to cool completely on a wire rack.
Serve.