Blackberry Cinnamon Streusel Coffee Cake

I made this for the guys for breakfast the other day.  You can find the recipe here:  http://www.marthastewart.com/965160/cinnamon-streusel-coffee-cake   I added blackberries to it!

 Spread half the batter in a greased tube pan.  Add the layer of cinnamon filling and the blackberries and then top with the rest of the batter.

 Mix the crumble topping with a pastry cutter.

 Sprinkle it on top of the batter.

 Make sure you get it combined very well.  Next time I will use the food processor to blend the topping better.

 Bake it and then cool it on a rack.

 Turn it out onto a plate.

 Drizzle it with confectioners sugar icing.  This is a very dense cake so a little goes a long way.