These blueberry muffins are pretty big and yummy with the sugary cinnamon crumb topping. The cake is soft and moist and stays fresh for several days. I usually fill the muffin cups just to the top edge for a beautiful coffee shop style muffin. I only use fresh blueberries and make sure to remove super ripe and mushy ones from your batch. Add extra blueberries too, if you want! I was in love with Starbuck very berry coffee cake, and every time I make these muffins, it reminds me of those amazing cakes. It has the same texture and similar taste in the shape of a muffin.