This is as good as it gets for blueberry muffins. Using the crumb topping I gave you for the apple pie is wonderful on these. I have one of those pans that bake muffin tops. Using a regular muffin pan is fine. These make 12 muffins. Remember, when using those new dark coated pans, always lower the heat by 25 degrees or they will brown too much.
If you are using the very large muffin tins (6 per pan) this will make about 6 large muffins.