Directions:

• Preheat oven to 350 degrees and line an 8x8 pyrex pan with parchment paper.
• In a bowl combine the cake ingredients and whisk to combine.
• In a separate smaller bowl combine the topping ingredients into a crumble mixture.
• Pour ½ of the cake batter into the prepared pan and spread out evenly.  Then take half of the topping mixture and sprinkle it evenly over the batter.
• Scoop the rest of the batter on top of that and spread it out evenly and finish it by sprinkling the remaining crumble evenly on top. 
• Bake the coffee cake for 40-45 minutes or until a toothpick inserted comes out clean (or with small crumbles).