chocochip and nuts muffins

My daughter loves chocloate cakes and muffins very much ,so this time i decided for her bday will try some muffins as her birthday cake we had already ordered outside so was not keen on making another cake and therefore started browsing eggless chocolate muffins and finally i bookmarked this recipe from DK's chefinyou blog.I was never good at baking as most of the times my eggless cakes were  never well risen  but  was highly  impressed by myself  this time when these muffins turned out superbly fantastic :P.My daughter also loved it and specially she liked the choco chips poking out and she was trying to pull all the chips and popping into her mouth.This is my entry for chaitra's bread mania event and priya for hosting this mth's T & T EVENT by lakshmi.
ingredients :
1/2 cup butter at room temp
1 cup sugar
11/2 cup yogurt
2 cups plain flour (maida )
1/2 tsp baking pwd
1/2 tsp salt
1tsp soda bi-carb
1tsp vanilla extract
3/4 th cup chocolate chips
for toppings :
2 tsp brown sugar ( i used white sugar though )
1 tsp cinnamon pwd
3-4 tbsp chopped walnuts ( i crushed it in mixer instead )
1/4th cup chocolate chips
method :
In a mixing bowl beat butter and sugar together till light and fluffy,add yogurt and mix well,add vanilla and mix well.In another dry bowl combine flour,salt,soda and baking powder together.Add the dry ingredients into the butter mixture and mix until moistened.Gently mix the chocolate chips into this mixture .Mix all the toppings ingredients together .Line a mufffin tray with a paper-lined cups and fill about 2/3rd of the mixture and sprinkle about a spoonful of topping on it and bake on a preheated oven on 350F for 15-20 mins or u can check by inserting a toothpick in the muffin and if it comes out clean that means they are done.