Orange, pineapple and walnut muffins

It's time for some more baking....I had half a can of pineapple leftover from theEgg less pineapple and cardamom cake which I wanted to finish ....And muffins are always on my baking list as they make a very good lunchbox option for bhavye...I made a batch on the Friday and they were gone before I could take pictures...So I made a batch again today morning...So here is the recipe...