Mix all the dry ingredients, the flour, baking powder, sugar, salt, and zest in a large bowl.
Gradually add the remaining ingredients, the milk, eggs, vanilla, softened butter, and mix until lumps disappear.
Empty the entire mixture into a piping bag or a plastic bag and make a hole.
Pour the mixture into your pre-greased muffin pan with the liners until one-third full and add a cookie, then place in the oven.
The oven should be preheated to 200, but when you put your muffins in, lower it to 180; take your muffins out after 8 minutes and add more mixture until half full, trying to cover the cookie.
Leave the muffins in the oven for 10 to 15 minutes or until they are done (test with a toothpick by inserting it until it comes out clean), take them out of the oven and let them cool for 30 minutes.
Nutritional Information
* * Information per 100g serving, percentage of daily values based on a 2,000 calorie diet.
Do you want to know what other nutrients this or other recipes have?