These are great!

2	C	flour
1/2	C	sugar
2	tsp.	baking powder
1/2	tsp.	baking soda
1/2	tsp.	salt
8	oz.	lime yogurt
3	tbsp.	lime juice
2		eggs
1/3	C	oil
1-1/2	C	mixed berries, blueberries, raspberries, cranberries

Mix dry ingredients in a large bowl. Mix wet ingredients and mix into dry ingredients just until moistened. Fill greased muffin tins and bake 400F for about 13 minutes for small muffins and 20 minutes for large.

You can sprinkle muffins with sugar if you like before baking.